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introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | summary the coefficients from the balanced chemical reaction tell us the proportions of the reactants and products . we can use ratios of the coefficients to convert between amounts of reactants and products in our reaction . for more information on other common stoichiometric calculations , check out this exciting seq... | do n't we need to use avagadro 's number somehow ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | the important message here is always check your units ! for a video explaining how units can be treated as numbers for easier bookkeeping , you can watch this video on dimensional analysis . step 3 : convert moles to mass . | do you have a useful video of separation of sodium chloride and sodium nitrate ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | introduction what do cookies and chemistry have in common ? many things , it turns out ! | which sample of carbonate will release the greatest volume of carbon dioxide ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | you might see this ratio called the mole ratio , the stoichiometric factor , or the stoichiometric ratio . the mole ratio can be used as a conversion factor between different quantities . problem solving tip : the first and most important step for all stoichiometry problems is the same no matter what you are solving fo... | and why do periodic tables have different values ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | based on our balanced chemical equation , we need 2 moles of naoh for every 1 mole of $ \text h_2 \text { so } _4 $ , which gives the following ratio : $ \text { mole ratio between naoh and h } _2 \text { so } _4=\dfrac { 2\ , \text { mol naoh } } { 1\ , \text { mol h } _2 \text { so } _4 } $ we can use the ratio to co... | formula units in 4.76 grams of iron ( iii ) chromate ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | we can convert the moles of $ \text { naoh } $ from step 2 to mass in grams using the molecular weight of $ \text { naoh } $ : $ 6.32 \times 10^ { -2 } \cancel { \text { mol } \ , \text { naoh } } \times \dfrac { 40.00\ , \text { g naoh } } { 1\ , \cancel { \text { mol naoh } } } =2.53 \ , \text { g naoh } $ we will ne... | if we cut these three equations directly does there is chance of cutting marks by examinar or no ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calculate amounts of reactants and products is called stoichiometry . it is a super technical... | so is this basically just a fancy word just to show what the reactants and the products are together ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | introduction what do cookies and chemistry have in common ? many things , it turns out ! | in what place value we should approximate ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | introduction what do cookies and chemistry have in common ? many things , it turns out ! | how to get the total valence of metal in gram equivalent ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | for a video explaining how units can be treated as numbers for easier bookkeeping , you can watch this video on dimensional analysis . step 3 : convert moles to mass . we can convert the moles of $ \text { naoh } $ from step 2 to mass in grams using the molecular weight of $ \text { naoh } $ : $ 6.32 \times 10^ { -2 } ... | if the ratio is for every one mole of h2so4 we need twice the moles of naoh , how come we do not just multiply the amount of grams of h2so4 by 2 ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | for a video explaining how units can be treated as numbers for easier bookkeeping , you can watch this video on dimensional analysis . step 3 : convert moles to mass . we can convert the moles of $ \text { naoh } $ from step 2 to mass in grams using the molecular weight of $ \text { naoh } $ : $ 6.32 \times 10^ { -2 } ... | what is a atomic mass ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | we can make ratios using the stoichiometric coefficients , and the ratios will tell us about the relative proportions of the chemicals in our reaction . you might see this ratio called the mole ratio , the stoichiometric factor , or the stoichiometric ratio . the mole ratio can be used as a conversion factor between di... | where did the mole ratio for naoh and h2so4 come from ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | the known quantity in this problem is the mass of $ \text h_2 \text { so } _4 $ . we can convert the mass of $ \text h_2 \text { so } _4 $ to moles using the molecular weight . given that the molecular weight of $ \text h_2 \text { so } _4 $ is 98.09 g/mol , we can find the moles of $ \text h_2 \text { so } _4 $ as fol... | for step 1 , i calculated the molecular weight myself by adding the h , s and o elements together and i got the answer is 98.07948 , why does it round up to 98.09 ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | you might see this ratio called the mole ratio , the stoichiometric factor , or the stoichiometric ratio . the mole ratio can be used as a conversion factor between different quantities . problem solving tip : the first and most important step for all stoichiometry problems is the same no matter what you are solving fo... | how are significant figures used in stiochiometry ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | for a video explaining how units can be treated as numbers for easier bookkeeping , you can watch this video on dimensional analysis . step 3 : convert moles to mass . we can convert the moles of $ \text { naoh } $ from step 2 to mass in grams using the molecular weight of $ \text { naoh } $ : $ 6.32 \times 10^ { -2 } ... | how much sodium chloride will be produced if 4 moles of sodium chlorate decomposes completely ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | you might see this ratio called the mole ratio , the stoichiometric factor , or the stoichiometric ratio . the mole ratio can be used as a conversion factor between different quantities . problem solving tip : the first and most important step for all stoichiometry problems is the same no matter what you are solving fo... | what is a mole again ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calculate amounts of reactants and products is called stoichiometry . it is a super technical... | how do i solve an equation that has excess of a chemical , for example `` how many grams of naf form when 0.5000 mol of hf reacts with excess na2sio3 '' ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | for a video explaining how units can be treated as numbers for easier bookkeeping , you can watch this video on dimensional analysis . step 3 : convert moles to mass . we can convert the moles of $ \text { naoh } $ from step 2 to mass in grams using the molecular weight of $ \text { naoh } $ : $ 6.32 \times 10^ { -2 } ... | why did we multiply 3.16 by two if naoh and h2so4 do n't have the same molecular weight ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . | fe2o3 + 6hcl to 2fecl3 + 3h2o ... how many moles of each product will be formed when 35 g of fe2o3 react with 35 g of hcl ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | for a video explaining how units can be treated as numbers for easier bookkeeping , you can watch this video on dimensional analysis . step 3 : convert moles to mass . we can convert the moles of $ \text { naoh } $ from step 2 to mass in grams using the molecular weight of $ \text { naoh } $ : $ 6.32 \times 10^ { -2 } ... | how do i convert molecules to moles ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . | hi all , i 'm having trouble with the question as follows : how many molecules are there in 0.50 mol of carbon dioxide ( co2 ) ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | for a video explaining how units can be treated as numbers for easier bookkeeping , you can watch this video on dimensional analysis . step 3 : convert moles to mass . we can convert the moles of $ \text { naoh } $ from step 2 to mass in grams using the molecular weight of $ \text { naoh } $ : $ 6.32 \times 10^ { -2 } ... | in an exothermic reaction , does the mass remain constant on both sides of the equation ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | you might see this ratio called the mole ratio , the stoichiometric factor , or the stoichiometric ratio . the mole ratio can be used as a conversion factor between different quantities . problem solving tip : the first and most important step for all stoichiometry problems is the same no matter what you are solving fo... | can stoichiometry be used to find concentrations of solutes in solutions ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | for a video explaining how units can be treated as numbers for easier bookkeeping , you can watch this video on dimensional analysis . step 3 : convert moles to mass . we can convert the moles of $ \text { naoh } $ from step 2 to mass in grams using the molecular weight of $ \text { naoh } $ : $ 6.32 \times 10^ { -2 } ... | what is the mass of cuo in the mixture ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | for a video explaining how units can be treated as numbers for easier bookkeeping , you can watch this video on dimensional analysis . step 3 : convert moles to mass . we can convert the moles of $ \text { naoh } $ from step 2 to mass in grams using the molecular weight of $ \text { naoh } $ : $ 6.32 \times 10^ { -2 } ... | if 4g of copper sulfate give 2.56g of anhydrous copper sulphate what will be the empirical formula n the mass of both compounds ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | for a video explaining how units can be treated as numbers for easier bookkeeping , you can watch this video on dimensional analysis . step 3 : convert moles to mass . we can convert the moles of $ \text { naoh } $ from step 2 to mass in grams using the molecular weight of $ \text { naoh } $ : $ 6.32 \times 10^ { -2 } ... | what is the difference between atomic mass units and moles ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | you might see this ratio called the mole ratio , the stoichiometric factor , or the stoichiometric ratio . the mole ratio can be used as a conversion factor between different quantities . problem solving tip : the first and most important step for all stoichiometry problems is the same no matter what you are solving fo... | what is a mole again ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | we can convert the mass of $ \text h_2 \text { so } _4 $ to moles using the molecular weight . given that the molecular weight of $ \text h_2 \text { so } _4 $ is 98.09 g/mol , we can find the moles of $ \text h_2 \text { so } _4 $ as follows : $ 3.10 \ , \cancel { \text g \ , \text h_2 \text { so } _4 } \times \dfrac ... | determine the number of atoms in 26.7 g of ch4 ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | for a video explaining how units can be treated as numbers for easier bookkeeping , you can watch this video on dimensional analysis . step 3 : convert moles to mass . we can convert the moles of $ \text { naoh } $ from step 2 to mass in grams using the molecular weight of $ \text { naoh } $ : $ 6.32 \times 10^ { -2 } ... | do i have to divide 3.16 x 10^-2 with the 2 moles or is there something else i have to do to get that answer ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | we can make ratios using the stoichiometric coefficients , and the ratios will tell us about the relative proportions of the chemicals in our reaction . you might see this ratio called the mole ratio , the stoichiometric factor , or the stoichiometric ratio . the mole ratio can be used as a conversion factor between di... | why the mass ratio is different from the mole ratio ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | introduction what do cookies and chemistry have in common ? many things , it turns out ! | do most of them take place in nature and are the ones from nature able to be calculated efficiently since it 's not in a lab ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | in this example , we know the amount of $ \text h_2 \text { so } _4 $ is 3.10 grams , and we would like to calculate the mass of $ \text { naoh } $ . armed with the balanced equation and a clear sense of purpose—hopefully—we can use the following strategy to tackle this stoichiometry problem : step 1 : convert known re... | in what type of stoichiometry problem would we use avogadro 's number ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | for a video explaining how units can be treated as numbers for easier bookkeeping , you can watch this video on dimensional analysis . step 3 : convert moles to mass . we can convert the moles of $ \text { naoh } $ from step 2 to mass in grams using the molecular weight of $ \text { naoh } $ : $ 6.32 \times 10^ { -2 } ... | how do you convert from grams to moles tom moles to grams ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | for a video explaining how units can be treated as numbers for easier bookkeeping , you can watch this video on dimensional analysis . step 3 : convert moles to mass . we can convert the moles of $ \text { naoh } $ from step 2 to mass in grams using the molecular weight of $ \text { naoh } $ : $ 6.32 \times 10^ { -2 } ... | are we to always assume the reactants are being given in moles , is this the convention ? |
introduction what do cookies and chemistry have in common ? many things , it turns out ! a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calc... | a balanced chemical equation is the recipe for a reaction : it contains a list of all the reactants ( the ingredients ) and products ( the cookies ) as well as their relative proportions . using a balanced chemical equation to calculate amounts of reactants and products is called stoichiometry . it is a super technical... | are you able to solve a stochiometric equation without using amus ? |
the definite integral can be used to express information about accumulation and net change in applied contexts . let 's see how it 's done . thinking about accumulation in a real world context say a tank is being filled with water at a constant rate of $ \blued { 5\text { l/min } } $ ( liters per minute ) for $ \maroon... | for example , in problem 2 , it would be a mistake to interpret $ \displaystyle\int_ { 2 } ^ { 3 } r ( t ) \ , dt $ as the distance eden walked in $ 3 $ hours . the lower boundary is $ 2 $ , so $ \displaystyle\int_ { 2 } ^ { 3 } r ( t ) \ , dt $ is the distance eden walked between the $ 2^ { \text { nd } } $ hour and t... | edit : specifically , in the example where eden walks `` between the 2nd hour and the 3rd hour '' , would n't it make more sense to say `` during the 2nd hour '' because the first statement implies that eden walked from the start of the 2nd hour to the start of the 3rd hour ? |
the definite integral can be used to express information about accumulation and net change in applied contexts . let 's see how it 's done . thinking about accumulation in a real world context say a tank is being filled with water at a constant rate of $ \blued { 5\text { l/min } } $ ( liters per minute ) for $ \maroon... | if we add an initial condition , we will get an actual value of $ f $ . for example , in problem 3 , $ \displaystyle\int_1^5r ( t ) \ , dt $ represents the change in the amount of money julia made between the $ 1^ { \text { st } } $ and the $ 5^ { \text { th } } $ months . but since we added $ 3 $ , which is the amount... | should n't the correct answer to problem 3 be `` julia made 19 thousand dollars in the first 5 months of the year '' ? |
‘ chromatography ’ is an analytical technique commonly used for separating a mixture of chemical substances into its individual components , so that the individual components can be thoroughly analyzed . there are many types of chromatography e.g. , liquid chromatography , gas chromatography , ion-exchange chromatograp... | affinity chromatography | solid ( agarose or porous glass beads on to which are immobilized molecules like enzymes and antibodies ) | liquid | binding affinity of the analyte molecule to the molecule immobilized on the stationary phase | if the molecule is a substrate for the enzyme , it will bind tightly to the enzyme... | in regards to gas chromatography , is n't it better to say that the separation is based on the samples interaction with the stationary phase of the column rather than the samples boiling point ? |
‘ chromatography ’ is an analytical technique commonly used for separating a mixture of chemical substances into its individual components , so that the individual components can be thoroughly analyzed . there are many types of chromatography e.g. , liquid chromatography , gas chromatography , ion-exchange chromatograp... | ‘ chromatography ’ is an analytical technique commonly used for separating a mixture of chemical substances into its individual components , so that the individual components can be thoroughly analyzed . there are many types of chromatography e.g. , liquid chromatography , gas chromatography , ion-exchange chromatograp... | extraction ... is it considered one of the types of partition chromatography ? |
‘ chromatography ’ is an analytical technique commonly used for separating a mixture of chemical substances into its individual components , so that the individual components can be thoroughly analyzed . there are many types of chromatography e.g. , liquid chromatography , gas chromatography , ion-exchange chromatograp... | ‘ chromatography ’ is an analytical technique commonly used for separating a mixture of chemical substances into its individual components , so that the individual components can be thoroughly analyzed . there are many types of chromatography e.g. , liquid chromatography , gas chromatography , ion-exchange chromatograp... | difference between gas and column chromatography ? |
‘ chromatography ’ is an analytical technique commonly used for separating a mixture of chemical substances into its individual components , so that the individual components can be thoroughly analyzed . there are many types of chromatography e.g. , liquid chromatography , gas chromatography , ion-exchange chromatograp... | ‘ chromatography ’ is an analytical technique commonly used for separating a mixture of chemical substances into its individual components , so that the individual components can be thoroughly analyzed . there are many types of chromatography e.g. , liquid chromatography , gas chromatography , ion-exchange chromatograp... | for ion-exchange chromatography , ( specifically cation exchange ) would raising the ph of the buffer will cause the beads to become more negatively charged thereby strengthening the ionic interactions between cations and the beads ? |
‘ chromatography ’ is an analytical technique commonly used for separating a mixture of chemical substances into its individual components , so that the individual components can be thoroughly analyzed . there are many types of chromatography e.g. , liquid chromatography , gas chromatography , ion-exchange chromatograp... | ‘ chromatography ’ is an analytical technique commonly used for separating a mixture of chemical substances into its individual components , so that the individual components can be thoroughly analyzed . there are many types of chromatography e.g. , liquid chromatography , gas chromatography , ion-exchange chromatograp... | and conversely for anion exchange chromatography ? |
‘ chromatography ’ is an analytical technique commonly used for separating a mixture of chemical substances into its individual components , so that the individual components can be thoroughly analyzed . there are many types of chromatography e.g. , liquid chromatography , gas chromatography , ion-exchange chromatograp... | the commonly used chromatographic techniques are tabulated below . technique | stationary phase | mobile phase | basis of separation | notes -|-|-|-|- paper chromatography | solid ( cellulose ) | liquid | polarity of molecules | compound spotted directly on a cellulose paper thin layer chromatography ( tlc ) | solid ( ... | for size exclusion chromatography , why do the small molecules get trapped between the microbeads ? |
‘ chromatography ’ is an analytical technique commonly used for separating a mixture of chemical substances into its individual components , so that the individual components can be thoroughly analyzed . there are many types of chromatography e.g. , liquid chromatography , gas chromatography , ion-exchange chromatograp... | ‘ chromatography ’ is an analytical technique commonly used for separating a mixture of chemical substances into its individual components , so that the individual components can be thoroughly analyzed . there are many types of chromatography e.g. , liquid chromatography , gas chromatography , ion-exchange chromatograp... | what are the theories of chromatography and it 's shortcomings ? |
‘ chromatography ’ is an analytical technique commonly used for separating a mixture of chemical substances into its individual components , so that the individual components can be thoroughly analyzed . there are many types of chromatography e.g. , liquid chromatography , gas chromatography , ion-exchange chromatograp... | ‘ chromatography ’ is an analytical technique commonly used for separating a mixture of chemical substances into its individual components , so that the individual components can be thoroughly analyzed . there are many types of chromatography e.g. , liquid chromatography , gas chromatography , ion-exchange chromatograp... | what is the problem in chemistry does chromatography address ? |
‘ chromatography ’ is an analytical technique commonly used for separating a mixture of chemical substances into its individual components , so that the individual components can be thoroughly analyzed . there are many types of chromatography e.g. , liquid chromatography , gas chromatography , ion-exchange chromatograp... | ‘ chromatography ’ is an analytical technique commonly used for separating a mixture of chemical substances into its individual components , so that the individual components can be thoroughly analyzed . there are many types of chromatography e.g. , liquid chromatography , gas chromatography , ion-exchange chromatograp... | can chromatography be used to separate acetone and hexane ? |
‘ chromatography ’ is an analytical technique commonly used for separating a mixture of chemical substances into its individual components , so that the individual components can be thoroughly analyzed . there are many types of chromatography e.g. , liquid chromatography , gas chromatography , ion-exchange chromatograp... | measured from the origin ( where we spotted the reaction mixture ) : component c travelled 1 cm , component a travelled 2 cms and component b travelled 3 cms . the solvent travelled 5 cms ( distance from origin to solvent front ) . rule of thumb : the component that travels the least distance on the tlc plate is the mo... | why does the solvent travel up the plate ? |
overview the compromise of 1877 resolved the disputed 1876 presidential election between democratic candidate samuel tilden and republican candidate rutherford b. hayes . democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of ... | overview the compromise of 1877 resolved the disputed 1876 presidential election between democratic candidate samuel tilden and republican candidate rutherford b. hayes . democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of ... | is there any records of the troops leaving the south that tell us how they felt in their leaving of the south ? |
overview the compromise of 1877 resolved the disputed 1876 presidential election between democratic candidate samuel tilden and republican candidate rutherford b. hayes . democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of ... | southern democrats , for their part , pledged that they would “ recognize the civil and political equality of blacks. ” they did not subsequently carry through on this promise but instead disfranchised black men from voting and imposed jim crow segregation across the south. $ ^4 $ the end of reconstruction in all , wit... | did this war end slavery ? |
overview the compromise of 1877 resolved the disputed 1876 presidential election between democratic candidate samuel tilden and republican candidate rutherford b. hayes . democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of ... | as henry adams , a black louisianan , lamented , “ the whole south—every state in the south—had got into the hands of the very men that held us as slaves. ” $ ^5 $ in the aftermath of the compromise of 1877 , a few african americans in some areas of the south continued to vote and serve in government offices into the 1... | can you add a map of the confederate states across the united states of america ? |
overview the compromise of 1877 resolved the disputed 1876 presidential election between democratic candidate samuel tilden and republican candidate rutherford b. hayes . democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of ... | democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of home rule in the south . president hayes ’ withdrawal of federal troops from louisiana and south carolina marked a major turning point in american political history , effe... | what happen after the jim crow 's laws was over ? |
overview the compromise of 1877 resolved the disputed 1876 presidential election between democratic candidate samuel tilden and republican candidate rutherford b. hayes . democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of ... | president hayes ’ withdrawal of federal troops from louisiana and south carolina marked a major turning point in american political history , effectively ending the reconstruction era and issuing in the system of jim crow . a contested presidential election the compromise of 1877 resolved the tumult that had arisen fol... | why was the election of 1876 so lopsided ? |
overview the compromise of 1877 resolved the disputed 1876 presidential election between democratic candidate samuel tilden and republican candidate rutherford b. hayes . democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of ... | southern states rapidly passed laws disenfranchising african americans and implementing racial segregation. $ ^6 $ what do you think ? what did the compromise of 1877 mean for african americans ? did the white southern democrats who promised that they would recognize civil and political rights for african americans as ... | what were the major impacts that the compromise of 1877 cause ? |
overview the compromise of 1877 resolved the disputed 1876 presidential election between democratic candidate samuel tilden and republican candidate rutherford b. hayes . democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of ... | as henry adams , a black louisianan , lamented , “ the whole south—every state in the south—had got into the hands of the very men that held us as slaves. ” $ ^5 $ in the aftermath of the compromise of 1877 , a few african americans in some areas of the south continued to vote and serve in government offices into the 1... | given the state of african americans in the south , did many of them move to the north , where laws were much more favorable to them ? |
overview the compromise of 1877 resolved the disputed 1876 presidential election between democratic candidate samuel tilden and republican candidate rutherford b. hayes . democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of ... | overview the compromise of 1877 resolved the disputed 1876 presidential election between democratic candidate samuel tilden and republican candidate rutherford b. hayes . democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of ... | why did thomas nast choose specifically that to draw and also that excerpt to suggest ? |
overview the compromise of 1877 resolved the disputed 1876 presidential election between democratic candidate samuel tilden and republican candidate rutherford b. hayes . democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of ... | democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of home rule in the south . president hayes ’ withdrawal of federal troops from louisiana and south carolina marked a major turning point in american political history , effe... | what were the difference between licolns , johnsons and the congressional plans for reconstruction ? |
overview the compromise of 1877 resolved the disputed 1876 presidential election between democratic candidate samuel tilden and republican candidate rutherford b. hayes . democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of ... | democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of home rule in the south . president hayes ’ withdrawal of federal troops from louisiana and south carolina marked a major turning point in american political history , effe... | how and why did reconstruction fail ? |
overview the compromise of 1877 resolved the disputed 1876 presidential election between democratic candidate samuel tilden and republican candidate rutherford b. hayes . democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of ... | what did the compromise of 1877 mean for african americans ? did the white southern democrats who promised that they would recognize civil and political rights for african americans as part of the compromise of 1877 hold true to this promise ? why do you think the republican party gave up on supporting civil rights for... | imagine you are an african-american teenager in the post civil war south dealing with jim crows laws in your state.how would you handle the fact that you might not be able to legally socialize in public with someone who is white ? |
overview the compromise of 1877 resolved the disputed 1876 presidential election between democratic candidate samuel tilden and republican candidate rutherford b. hayes . democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of ... | for almost four months , from november into late february , tensions remained high as the question of who was to become the nation ’ s next president remained unresolved . in january 1877 , congress established a 15-member electoral commission to resolve the issue of which candidate had won the contested states . the c... | did congress themselves choose who was on the 15 member electoral commission and was the decision to compromise independent or did congress `` lead '' the commission to compromise ? |
overview the compromise of 1877 resolved the disputed 1876 presidential election between democratic candidate samuel tilden and republican candidate rutherford b. hayes . democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of ... | president hayes ’ withdrawal of federal troops from louisiana and south carolina marked a major turning point in american political history , effectively ending the reconstruction era and issuing in the system of jim crow . a contested presidential election the compromise of 1877 resolved the tumult that had arisen fol... | was it fatigue , fear that we would be again at war that allowed a quid pro quo in a presidential election ? |
overview the compromise of 1877 resolved the disputed 1876 presidential election between democratic candidate samuel tilden and republican candidate rutherford b. hayes . democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of ... | southern states rapidly passed laws disenfranchising african americans and implementing racial segregation. $ ^6 $ what do you think ? what did the compromise of 1877 mean for african americans ? did the white southern democrats who promised that they would recognize civil and political rights for african americans as ... | did the terms of the compromise of 1877 end military reconstruction ? |
overview the compromise of 1877 resolved the disputed 1876 presidential election between democratic candidate samuel tilden and republican candidate rutherford b. hayes . democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of ... | what did the compromise of 1877 mean for african americans ? did the white southern democrats who promised that they would recognize civil and political rights for african americans as part of the compromise of 1877 hold true to this promise ? why do you think the republican party gave up on supporting civil rights for... | or just protect the civil rights of ex-slaves ? |
overview the compromise of 1877 resolved the disputed 1876 presidential election between democratic candidate samuel tilden and republican candidate rutherford b. hayes . democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of ... | as henry adams , a black louisianan , lamented , “ the whole south—every state in the south—had got into the hands of the very men that held us as slaves. ” $ ^5 $ in the aftermath of the compromise of 1877 , a few african americans in some areas of the south continued to vote and serve in government offices into the 1... | how did tenant farming and sharecropping contribute to a cycle of poverty for african americans after the end of the civil war ? |
overview the compromise of 1877 resolved the disputed 1876 presidential election between democratic candidate samuel tilden and republican candidate rutherford b. hayes . democrats agreed that rutherford b. hayes would become president in exchange for the withdrawal of federal troops from the south and the granting of ... | as henry adams , a black louisianan , lamented , “ the whole south—every state in the south—had got into the hands of the very men that held us as slaves. ” $ ^5 $ in the aftermath of the compromise of 1877 , a few african americans in some areas of the south continued to vote and serve in government offices into the 1... | what might americans today learn from the civil rights experience of african americans during reconstruction ? |
the triumph the triumph was a riotous military ritual celebrated by the romans over the course of centuries—whenever their commander had won a spectacular victory . on the appointed day ( or days ) the city would be overflowing with crowds , pageantry , spoils , prisoners , depictions and souvenirs of foreign lands—but... | the column honoring admiral horatio nelson in london ’ s trafalgar square ( c. 1843 ) draws on the roman tradition that included the column of trajan along with earlier , republican monuments like the columna rostrata of caius duilius . the column dedicated to napoleon i erected in the place vendôme in paris ( c. 1810 ... | what about the washington monument of baltimore , maryland ( 1829 ) , was `` ... directly inspired by the column of trajan '' ? |
the triumph the triumph was a riotous military ritual celebrated by the romans over the course of centuries—whenever their commander had won a spectacular victory . on the appointed day ( or days ) the city would be overflowing with crowds , pageantry , spoils , prisoners , depictions and souvenirs of foreign lands—but... | significance and influence the column of trajan may be contextualized in a long line of roman victory monuments , some of which honored specific military victories and thus may be termed “ triumphal monuments ” and others that generally honor a public career and are thus “ honorific monuments. ” among the earliest exam... | i do n't see the resemblance between that obelisk and this column ? |
the triumph the triumph was a riotous military ritual celebrated by the romans over the course of centuries—whenever their commander had won a spectacular victory . on the appointed day ( or days ) the city would be overflowing with crowds , pageantry , spoils , prisoners , depictions and souvenirs of foreign lands—but... | the triumph the triumph was a riotous military ritual celebrated by the romans over the course of centuries—whenever their commander had won a spectacular victory . on the appointed day ( or days ) the city would be overflowing with crowds , pageantry , spoils , prisoners , depictions and souvenirs of foreign lands—but... | was the entire area excavated in some sort of urban cleanup ? |
a different public art imagine walking past a sculpture in a city plaza—you might see a 19th-century bronze statue of a civil war general on horseback or a marble statue of the greek goddess of victory atop a high pedestal . perhaps you glance up at the artwork in passing . or , maybe you do n't even take notice , as i... | was it the 180 concerned art critics and bureaucrats that attended the forum ? the 10,000 people who worked in federal plaza ? all new yorkers ? | so if i find the `` ... benches and plantings in federal plaza ... '' to be an `` eyesore '' where do i petition to get them removed ? |
key points the aggregate demand/aggregate supply model is a model that shows what determines total supply or total demand for the economy and how total demand and total supply interact at the macroeconomic level . aggregate supply is the total quantity of output firms will produce and sell—in other words , the real gdp... | how will it alter the price level ? what do you think will happen to employment ? harris the imaginary country of harris island has the aggregate supply and aggregate demand curves given in the table below . | regarding the problems in the end of the chapter i have some questions to make , mostly about employment : a ) at xurbia , how can we predict what will happen with unemployement in that case ? |
key points the aggregate demand/aggregate supply model is a model that shows what determines total supply or total demand for the economy and how total demand and total supply interact at the macroeconomic level . aggregate supply is the total quantity of output firms will produce and sell—in other words , the real gdp... | what do you think will happen to employment ? harris the imaginary country of harris island has the aggregate supply and aggregate demand curves given in the table below . || price level : ad/as || price level | ad | as - | - | - 100 | 700 | 200 120 | 600 | 325 140 | 500 | 500 160 | 400 | 570 180 | 300 | 620 plot an ad... | b ) at harris , how can we imagine about the employements rate or unemployements ? |
key points the aggregate demand/aggregate supply model is a model that shows what determines total supply or total demand for the economy and how total demand and total supply interact at the macroeconomic level . aggregate supply is the total quantity of output firms will produce and sell—in other words , the real gdp... | in addition , the economic reasons for the shapes of the curves in the macroeconomic model are different from the reasons for the shapes of the curves in microeconomic models . demand curves for individual goods or services slope down primarily because of the existence of substitute goods , not the wealth effects , int... | when combine ad & as to reach equilibrium point , does this mean that we r taking price of all final goods and services including rewards of factor of production ( rent , wages , interest , profit ) ? |
key points the aggregate demand/aggregate supply model is a model that shows what determines total supply or total demand for the economy and how total demand and total supply interact at the macroeconomic level . aggregate supply is the total quantity of output firms will produce and sell—in other words , the real gdp... | critical thinking question on a microeconomic demand curve , a decrease in price causes an increase in quantity demanded because the product in question is now relatively less expensive than substitute products . explain why aggregate demand increases in response to a decrease in the aggregate price level—it 's not for... | why aggregate demand does not increase for the same reason in response to a decrease in the aggregate price level ? |
key points the aggregate demand/aggregate supply model is a model that shows what determines total supply or total demand for the economy and how total demand and total supply interact at the macroeconomic level . aggregate supply is the total quantity of output firms will produce and sell—in other words , the real gdp... | critical thinking question on a microeconomic demand curve , a decrease in price causes an increase in quantity demanded because the product in question is now relatively less expensive than substitute products . explain why aggregate demand increases in response to a decrease in the aggregate price level—it 's not for... | why aggregate demand does not increase for the same reason in response to a decrease in the aggregate price level ? |
key points the aggregate demand/aggregate supply model is a model that shows what determines total supply or total demand for the economy and how total demand and total supply interact at the macroeconomic level . aggregate supply is the total quantity of output firms will produce and sell—in other words , the real gdp... | harris the imaginary country of harris island has the aggregate supply and aggregate demand curves given in the table below . || price level : ad/as || price level | ad | as - | - | - 100 | 700 | 200 120 | 600 | 325 140 | 500 | 500 160 | 400 | 570 180 | 300 | 620 plot an ad/as diagram from the data above . identify the... | what happens to the ad then does it decrease ? |
key points the aggregate demand/aggregate supply model is a model that shows what determines total supply or total demand for the economy and how total demand and total supply interact at the macroeconomic level . aggregate supply is the total quantity of output firms will produce and sell—in other words , the real gdp... | we have a model like this ! it 's called the aggregate demand/aggregate supply model . equilibrium in the aggregate demand/aggregate supply model let 's begin by looking at the point where aggregate supply equals aggregate demand—the equilibrium . | can you evaluate the view that an increase in aggregate demand will always lead to an inflationary gap please ? |
a symbol of byzantium the great church of the byzantine capital constantinople ( istanbul ) took its current structural form under the direction of the emperor justinian i . the church was dedicated in 537 , amid great ceremony and the pride of the emperor ( who was sometimes said to have seen the completed building in... | any doubt about the steadfastness of hagia sophia could hardly stand in the face of the fact that a divine guardian watches over the church . * damage and repairs hagia sophia sits astride an earthquake fault . the building was severely damaged by three quakes during its early history . | is the hagia sophia similar to the pantheon , in that were the dome continued on to form a perfect sphere exactly just touching the ground ? |
a symbol of byzantium the great church of the byzantine capital constantinople ( istanbul ) took its current structural form under the direction of the emperor justinian i . the church was dedicated in 537 , amid great ceremony and the pride of the emperor ( who was sometimes said to have seen the completed building in... | hagia sophia is the symbol of byzantium in the same way that the parthenon embodies classical greece or the eiffel tower typifies paris . each of those structures express values and beliefs : perfect proportion , industrial confidence , a unique spirituality . by overall impression and attention to detail , the builder... | i 'm wondering how many other structures have been around that long ? |
a symbol of byzantium the great church of the byzantine capital constantinople ( istanbul ) took its current structural form under the direction of the emperor justinian i . the church was dedicated in 537 , amid great ceremony and the pride of the emperor ( who was sometimes said to have seen the completed building in... | despite the repairs , one assumes that the city saw the survival of the church , amid city rubble , as yet another indication of divine guardianship of the church . extensive repair and restoration are ongoing in the modern period . we likely pride ourselves on the ability of modern engineering to compensate for daring... | something like the roman coliseum for example ; how much of that was still standing in modern times , and how much of it did we have to repair to make it look the way it does today ? |
a symbol of byzantium the great church of the byzantine capital constantinople ( istanbul ) took its current structural form under the direction of the emperor justinian i . the church was dedicated in 537 , amid great ceremony and the pride of the emperor ( who was sometimes said to have seen the completed building in... | the capital contradicts its task rather than expressing it . this deep carving appears throughout hagia sophia 's capitals , spandrels , and entablatures . everywhere we look stone visually denying its ability to do the work that it must do . the important point is that the decoration suggests that something other than... | what stone was used for the capitals ? |
a symbol of byzantium the great church of the byzantine capital constantinople ( istanbul ) took its current structural form under the direction of the emperor justinian i . the church was dedicated in 537 , amid great ceremony and the pride of the emperor ( who was sometimes said to have seen the completed building in... | any doubt about the steadfastness of hagia sophia could hardly stand in the face of the fact that a divine guardian watches over the church . * damage and repairs hagia sophia sits astride an earthquake fault . the building was severely damaged by three quakes during its early history . | did the ottomans build the minarets and change anything else in the hagia sophia ? |
a symbol of byzantium the great church of the byzantine capital constantinople ( istanbul ) took its current structural form under the direction of the emperor justinian i . the church was dedicated in 537 , amid great ceremony and the pride of the emperor ( who was sometimes said to have seen the completed building in... | any doubt about the steadfastness of hagia sophia could hardly stand in the face of the fact that a divine guardian watches over the church . * damage and repairs hagia sophia sits astride an earthquake fault . the building was severely damaged by three quakes during its early history . | when the hagia sophia was first opened , was it open to the public ? |
a symbol of byzantium the great church of the byzantine capital constantinople ( istanbul ) took its current structural form under the direction of the emperor justinian i . the church was dedicated in 537 , amid great ceremony and the pride of the emperor ( who was sometimes said to have seen the completed building in... | any doubt about the steadfastness of hagia sophia could hardly stand in the face of the fact that a divine guardian watches over the church . * damage and repairs hagia sophia sits astride an earthquake fault . the building was severely damaged by three quakes during its early history . | why in the virgin and child in the apse moasic are there spade symbols on the pillow she sits on ? |
a symbol of byzantium the great church of the byzantine capital constantinople ( istanbul ) took its current structural form under the direction of the emperor justinian i . the church was dedicated in 537 , amid great ceremony and the pride of the emperor ( who was sometimes said to have seen the completed building in... | a symbol of byzantium the great church of the byzantine capital constantinople ( istanbul ) took its current structural form under the direction of the emperor justinian i . the church was dedicated in 537 , amid great ceremony and the pride of the emperor ( who was sometimes said to have seen the completed building in... | what does the spade symbolize ? |
a symbol of byzantium the great church of the byzantine capital constantinople ( istanbul ) took its current structural form under the direction of the emperor justinian i . the church was dedicated in 537 , amid great ceremony and the pride of the emperor ( who was sometimes said to have seen the completed building in... | the capital contradicts its task rather than expressing it . this deep carving appears throughout hagia sophia 's capitals , spandrels , and entablatures . everywhere we look stone visually denying its ability to do the work that it must do . | what technic used the artists to get the deep carving ? |
a symbol of byzantium the great church of the byzantine capital constantinople ( istanbul ) took its current structural form under the direction of the emperor justinian i . the church was dedicated in 537 , amid great ceremony and the pride of the emperor ( who was sometimes said to have seen the completed building in... | any doubt about the steadfastness of hagia sophia could hardly stand in the face of the fact that a divine guardian watches over the church . * damage and repairs hagia sophia sits astride an earthquake fault . the building was severely damaged by three quakes during its early history . | was the hagia sophia a basilica ? |
key points : the earth formed roughly $ 4.5 $ billion years ago , and life probably began between $ 3.5 $ and $ 3.9 $ billion years ago . the oparin-haldane hypothesis suggests that life arose gradually from inorganic molecules , with “ building blocks ” like amino acids forming first and then combining to make complex... | the oparin-haldane hypothesis suggests that life arose gradually from inorganic molecules , with “ building blocks ” like amino acids forming first and then combining to make complex polymers . the miller-urey experiment provided the first evidence that organic molecules needed for life could be formed from inorganic c... | could another experiment much like the miller-urey experiment be conducted again with slightly different components today ? |
key points : the earth formed roughly $ 4.5 $ billion years ago , and life probably began between $ 3.5 $ and $ 3.9 $ billion years ago . the oparin-haldane hypothesis suggests that life arose gradually from inorganic molecules , with “ building blocks ” like amino acids forming first and then combining to make complex... | once formed , these building blocks could have come together to form polymers such as proteins or rna . many scientists favor the rna world hypothesis , in which rna , not dna , was the first genetic molecule of life on earth . other ideas include the pre-rna world hypothesis and the metabolism-first hypothesis . | does it mean that dna is the evolution of rna ? |
key points : the earth formed roughly $ 4.5 $ billion years ago , and life probably began between $ 3.5 $ and $ 3.9 $ billion years ago . the oparin-haldane hypothesis suggests that life arose gradually from inorganic molecules , with “ building blocks ” like amino acids forming first and then combining to make complex... | most importantly , various meteorites have turned out to contain organic compounds ( derived from space , not from earth ) . one meteorite , alh84001 , came from mars and contained organic molecules with multiple ring structures . another meteorite , the murchison meteorite , carried nitrogenous bases ( like those foun... | thet the organic molecules came out of the planet but , if this its true from where did they came from ? |
key points : the earth formed roughly $ 4.5 $ billion years ago , and life probably began between $ 3.5 $ and $ 3.9 $ billion years ago . the oparin-haldane hypothesis suggests that life arose gradually from inorganic molecules , with “ building blocks ” like amino acids forming first and then combining to make complex... | no one is sure which hypothesis is correct – or if the correct hypothesis is still out there , waiting to be discovered . when did life appear on earth ? geologists estimate that the earth formed around $ 4.5 $ billion years ago . | if metorite fall to earth can we be having elements not yet in the periodic table here on earth ? |
key points : the earth formed roughly $ 4.5 $ billion years ago , and life probably began between $ 3.5 $ and $ 3.9 $ billion years ago . the oparin-haldane hypothesis suggests that life arose gradually from inorganic molecules , with “ building blocks ” like amino acids forming first and then combining to make complex... | large , complex molecules like dna and protein were missing , but the miller-urey experiment showed that at least some of the building blocks for these molecules could form spontaneously from simple compounds . were miller and urey 's results meaningful ? scientists now think that the atmosphere of early earth was diff... | what is difference between miller and operian hypotheses and who was right ? |
key points : the earth formed roughly $ 4.5 $ billion years ago , and life probably began between $ 3.5 $ and $ 3.9 $ billion years ago . the oparin-haldane hypothesis suggests that life arose gradually from inorganic molecules , with “ building blocks ” like amino acids forming first and then combining to make complex... | many scientists favor the rna world hypothesis , in which rna , not dna , was the first genetic molecule of life on earth . other ideas include the pre-rna world hypothesis and the metabolism-first hypothesis . organic compounds could have been delivered to early earth by meteorites and other celestial objects . | why is it that the rna world hypothesis is more favored over the metabolism-first hypothesis ? |
key points : the earth formed roughly $ 4.5 $ billion years ago , and life probably began between $ 3.5 $ and $ 3.9 $ billion years ago . the oparin-haldane hypothesis suggests that life arose gradually from inorganic molecules , with “ building blocks ” like amino acids forming first and then combining to make complex... | formation of `` individuals '' enclosed by membranes ( separate from the communal network ) would have been a late step $ ^ { 14 } $ . what might early cells have looked like ? a basic property of a cell is the ability to maintain an internal environment different from the surrounding environment . | what are the three materials would the early cells need to have to become self-sustaining ? |
key points : the earth formed roughly $ 4.5 $ billion years ago , and life probably began between $ 3.5 $ and $ 3.9 $ billion years ago . the oparin-haldane hypothesis suggests that life arose gradually from inorganic molecules , with “ building blocks ” like amino acids forming first and then combining to make complex... | this is sometimes called the `` pre-rna world '' hypothesis $ ^ { 17 } $ . the `` metabolism-first '' hypothesis an alternative to the genes-first hypothesis is the metabolism-first hypothesis , which suggests that self-sustaining networks of metabolic reactions may have been the first simple life ( predating nucleic a... | is there a name for the very first living cell , judging by today 's criteria for life ? |
key points : the earth formed roughly $ 4.5 $ billion years ago , and life probably began between $ 3.5 $ and $ 3.9 $ billion years ago . the oparin-haldane hypothesis suggests that life arose gradually from inorganic molecules , with “ building blocks ” like amino acids forming first and then combining to make complex... | in principle , this type of compartment could surround a self-replicating ribozyme or the components of a metabolic pathway , making a very basic cell . though intriguing , this type of idea is not yet supported by experimental evidence – i.e. , no experiment has yet been able to spontaneously generate a self-replicati... | what is the origin of inanimate/non-living matter ? |
overview in the european race to colonial dominance , the treaty of tordesillas legitimized spain ’ s holdings in the new world , indicating spanish primacy over portugal . the successes of columbus ushered in an era of spanish conquest that led numerous other european explorers to attempt similar colonization projects... | overview in the european race to colonial dominance , the treaty of tordesillas legitimized spain ’ s holdings in the new world , indicating spanish primacy over portugal . the successes of columbus ushered in an era of spanish conquest that led numerous other european explorers to attempt similar colonization projects... | why did the women back then wear such uncomfortable clothing ? |
overview in the european race to colonial dominance , the treaty of tordesillas legitimized spain ’ s holdings in the new world , indicating spanish primacy over portugal . the successes of columbus ushered in an era of spanish conquest that led numerous other european explorers to attempt similar colonization projects... | how did native people shape the course of spanish conquest ? why did many conquistadores fail to establish colonies in the new world ? what factors lead to their demise ? | the text did n't provide much information about conquistadores ' failure in establishing colonies ... my guess is that the resistance from the natives and a lack of resources ( like gold , silver and other minerals ) in the colonized area caused the failures ? |
overview in the european race to colonial dominance , the treaty of tordesillas legitimized spain ’ s holdings in the new world , indicating spanish primacy over portugal . the successes of columbus ushered in an era of spanish conquest that led numerous other european explorers to attempt similar colonization projects... | overview in the european race to colonial dominance , the treaty of tordesillas legitimized spain ’ s holdings in the new world , indicating spanish primacy over portugal . the successes of columbus ushered in an era of spanish conquest that led numerous other european explorers to attempt similar colonization projects... | were cortez and malatizin married ? |
when you think of the renaissance , the names that come to mind are probably the artists of this period ( the high renaissance ) : leonardo and michelangelo , for instance . and when you think of the greatest work of art in the western world , michelangelo 's sistine ceiling might come to mind . this is a period of big... | verocchio asked leonardo to paint one of the angels in his painting of the baptism of christ ( left ) . can you tell which angel is leonardo 's ? one angel should look more like a boy—that 's the early renaissance angel ( the one painted by verrocchio ) and the other angel should look like truly divine , sent by god fr... | would verrocchio have been offended when his student ( leonardo da vinci ) ended up painting an angel that was clearly more technically advanced than that of his own ? |
when you think of the renaissance , the names that come to mind are probably the artists of this period ( the high renaissance ) : leonardo and michelangelo , for instance . and when you think of the greatest work of art in the western world , michelangelo 's sistine ceiling might come to mind . this is a period of big... | we could say that leonardo unites the real and spiritual , or soul and substance . the best way to see this is in this painting by verrocchio—an important early renaissance artist who leonardo was apprenticed to when he was young . verocchio asked leonardo to paint one of the angels in his painting of the baptism of ch... | what other paintings did verrocchio paint ? |
when you think of the renaissance , the names that come to mind are probably the artists of this period ( the high renaissance ) : leonardo and michelangelo , for instance . and when you think of the greatest work of art in the western world , michelangelo 's sistine ceiling might come to mind . this is a period of big... | we could say that leonardo unites the real and spiritual , or soul and substance . the best way to see this is in this painting by verrocchio—an important early renaissance artist who leonardo was apprenticed to when he was young . verocchio asked leonardo to paint one of the angels in his painting of the baptism of ch... | how did leonardo learn to paint in the way that he did if he apprenticed under verrocchio ? |
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