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the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | that ’ s enough pressure to make it through all of the organs in the body . getting the pressure right now , let ’ s say that the right ventricle raised the pressure up to 140mmhg , then you may be able to have the blood pressure drop 20mmhg and still be at 120mmhg . that sounds like a great solution , except for the f... | what is chp and bcop pressure ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | this diffusion occurs in a fraction of a second because the distance between the alveoli and the red blood cell is so tiny . why you need your heart now let ’ s pause and ponder the following : what would happen if there was no heart ? well , diffusion of oxygen works wonders when the distances are very small , but wha... | where on the diagram of the heart does the electrical system fit in ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | why are there two ventricles ? now here ’ s a thought experiment : why not just have just one ventricle ( single pump ) that moves blood to the lungs and then onwards to the rest of the body ? it ’ s actually a great question , since at first glance it seems like it would be more efficient to just allow the blood to go... | in the last paragraph , what would happen if one pump stops working , will the other be able to help or will that body perish ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | that means that each red blood cell can bind ~1 billion oxygen molecules ! as a result , the vast majority ( & gt ; 97 % ) of the o2 molecules are actually bound to oxyhemoglobin ; with only a minority of o2 molecules floating freely in the blood . while air is going in and out of the lungs , the heart is busy working ... | what if we increase amount of o2 floating in our system ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | well , diffusion of oxygen works wonders when the distances are very small , but what about large distances like the distance from your lungs to your feet ? could a single molecule of oxygen simply diffuse all the way there ? in theory , it could—but it would take a really long time ! by the time the oxygen arrived in ... | would a human being die from the lack of oxygen in their body ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | well , diffusion of oxygen works wonders when the distances are very small , but what about large distances like the distance from your lungs to your feet ? could a single molecule of oxygen simply diffuse all the way there ? in theory , it could—but it would take a really long time ! by the time the oxygen arrived in ... | approximately how much oxygen ( in percentage ) would it take for a human being to die/immobilize ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | for the return trip , blood travels through the veins of the body to get back to the right side of the heart and repeat the process . so there you have it – one heart – two pumps : the right ventricle and the left ventricle . why are there two ventricles ? | which ventricle pumps high pressure ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . | is haemoglobin the plural word of haemoglobin or it is a spelling mistake ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | in theory , it could—but it would take a really long time ! by the time the oxygen arrived in your toes by simple diffusion , they would have died and fallen off . once the oxygen has gotten into the blood stream , there has to be a way to rapidly “ move ” the oxygen molecules from one place to another . this is where ... | why is there still a remaining 3 % of oxygen unattached to proteins in the rbc ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . | can a person fluctuate from hypertension to hypotension ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | think of it this way using numbers . pressure is needed to move blood through the resistance of a large network of blood vessels like arteries , capillaries , and veins . even if the right ventricle squeezes down and raises the pressure of the blood to about 25mmhg , after passing through the lungs , the blood pressure... | whn finding a pulse the larger arteries have higher pressure but why do the veins have a weaker pressure ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | that ’ s enough pressure to make it through all of the organs in the body . getting the pressure right now , let ’ s say that the right ventricle raised the pressure up to 140mmhg , then you may be able to have the blood pressure drop 20mmhg and still be at 120mmhg . that sounds like a great solution , except for the f... | if the heart were to go at 140 mmhg but at the flip note , the capillaries are able to hold that amount of pressure and still keep going then can we still survive ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | this diffusion occurs in a fraction of a second because the distance between the alveoli and the red blood cell is so tiny . why you need your heart now let ’ s pause and ponder the following : what would happen if there was no heart ? well , diffusion of oxygen works wonders when the distances are very small , but wha... | what would happen if a machine replaced the heart ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | this diffusion occurs in a fraction of a second because the distance between the alveoli and the red blood cell is so tiny . why you need your heart now let ’ s pause and ponder the following : what would happen if there was no heart ? well , diffusion of oxygen works wonders when the distances are very small , but wha... | would the heart still function properly ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | this diffusion occurs in a fraction of a second because the distance between the alveoli and the red blood cell is so tiny . why you need your heart now let ’ s pause and ponder the following : what would happen if there was no heart ? well , diffusion of oxygen works wonders when the distances are very small , but wha... | what if we got just one ventricle , but the order is heart - > body - > lung - > heart ( lung before heart instead of after heart ) ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | each red blood cell is filled with ~250 million hemoglobin proteins , and each hemoglobin protein can bind to 4 o2 molecules ( the bound form is called “ oxyhemoglobin ” ) . that means that each red blood cell can bind ~1 billion oxygen molecules ! as a result , the vast majority ( & gt ; 97 % ) of the o2 molecules are... | how long does a red blood cell stay in the lung on average ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | this diffusion occurs in a fraction of a second because the distance between the alveoli and the red blood cell is so tiny . why you need your heart now let ’ s pause and ponder the following : what would happen if there was no heart ? well , diffusion of oxygen works wonders when the distances are very small , but wha... | does the lung empty / fill up with each heart beat , or would your average rbc stay in the lungs/alveoli for longer ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | that ’ s enough pressure to make it through all of the organs in the body . getting the pressure right now , let ’ s say that the right ventricle raised the pressure up to 140mmhg , then you may be able to have the blood pressure drop 20mmhg and still be at 120mmhg . that sounds like a great solution , except for the f... | if the reason human hearts have 2 ventricles is to get the pressure right , are there other hearts that have 1 ventricle ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | this diffusion occurs in a fraction of a second because the distance between the alveoli and the red blood cell is so tiny . why you need your heart now let ’ s pause and ponder the following : what would happen if there was no heart ? well , diffusion of oxygen works wonders when the distances are very small , but wha... | would n't also another reason the heart has two pumps is for the heart to get oxygen itself so it can work ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | the right ventricle ( pump # 1 ) has muscular walls that squeeze down and softly push the blood into the arteries , arterioles , and capillaries of the lungs . next , the oxygen diffuses from an area of high concentration ( alveoli ) to an area of low concentration ( blood ) , before the blood returns ( through pulmona... | when oxygen diffuses from alveoli to blood vessels , is there any chance of oxygen producing air bubbles in the blood ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | when you really stop and think about it , many of the things that we do can be traced back to our cellular needs . a breath of air now let ’ s follow a single breath of air . 21 % of the molecules in this breath are oxygen molecules , and as they race down into the lungs , they end up in the alveoli which are tiny air-... | how does the heart suck in blood and air ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | each red blood cell is filled with ~250 million hemoglobin proteins , and each hemoglobin protein can bind to 4 o2 molecules ( the bound form is called “ oxyhemoglobin ” ) . that means that each red blood cell can bind ~1 billion oxygen molecules ! as a result , the vast majority ( & gt ; 97 % ) of the o2 molecules are... | is the vein blue or red on the diagram ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | what are p waves and how do they work ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | for the return trip , blood travels through the veins of the body to get back to the right side of the heart and repeat the process . so there you have it – one heart – two pumps : the right ventricle and the left ventricle . why are there two ventricles ? | what does the right ventricle do ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | that ’ s enough pressure to make it through all of the organs in the body . getting the pressure right now , let ’ s say that the right ventricle raised the pressure up to 140mmhg , then you may be able to have the blood pressure drop 20mmhg and still be at 120mmhg . that sounds like a great solution , except for the f... | so when we measure blood pressure it is that left and right ventricular blood pressure ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | think of it this way using numbers . pressure is needed to move blood through the resistance of a large network of blood vessels like arteries , capillaries , and veins . even if the right ventricle squeezes down and raises the pressure of the blood to about 25mmhg , after passing through the lungs , the blood pressure... | veins carry blood to the heart , arteries carry blood away from the heart , but what does a capillary do exactly ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | this diffusion occurs in a fraction of a second because the distance between the alveoli and the red blood cell is so tiny . why you need your heart now let ’ s pause and ponder the following : what would happen if there was no heart ? well , diffusion of oxygen works wonders when the distances are very small , but wha... | wen a heart attack happens , is it a problem with the bran or the heart ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | that sounds like a great solution , except for the fact : 1 . if exposed to those high pressures , fluid would get pushed right out of the capillaries and into the lungs ( some capillaries would actually break ! ) , and 2.at high pressures , blood would move past the alveoli so quickly that o2 molecules would n't have ... | i would n't guess that human blood is ever actually blue , but is there a noticeable color difference between oxygen rich and the otherwise oxygen-less ? |
the heart is a double pump what cells need to understand the critical importance of the heart requires taking a step back so we understand the needs of each cell in our body . remember that our body is composed of over 10 trillion cells that work together in remarkable unity ( a lesson in good governance ! ) . cells ha... | if exposed to those high pressures , fluid would get pushed right out of the capillaries and into the lungs ( some capillaries would actually break ! ) , and 2.at high pressures , blood would move past the alveoli so quickly that o2 molecules would n't have time to diffuse into the blood and bind to hemoglobin . this m... | if i were to unfortunately cut an artery , and disregarding the blood spurts echoing a heart beat , would i be able to know based on the color ? |
key points the reaction mechanism describes the sequence of elementary reactions that must occur to go from reactants to products . reaction intermediates are formed in one step and then consumed in a later step of the reaction mechanism . the slowest step in the mechanism is called the rate determining or rate-limitin... | summary the reaction mechanism describes the sequence of elementary reactions that must occur to go from reactants to products . reaction intermediates are formed in one step and then consumed in a later step of the reaction mechanism . the slowest step in the mechanism is called the rate determining step or rate-limit... | how do we determine the slow or fast step ? |
key points the reaction mechanism describes the sequence of elementary reactions that must occur to go from reactants to products . reaction intermediates are formed in one step and then consumed in a later step of the reaction mechanism . the slowest step in the mechanism is called the rate determining or rate-limitin... | 3 . what are the intermediates in this reaction ? how do we evaluate a reaction mechanism ? when evaluating a proposed reaction mechanism , there are two things to check : the elementary reaction equations add up to the overall reaction . the rate law for the overall reaction is consistent with the rate of each element... | how do we decide whether a reaction is slow or fast ? |
key points the reaction mechanism describes the sequence of elementary reactions that must occur to go from reactants to products . reaction intermediates are formed in one step and then consumed in a later step of the reaction mechanism . the slowest step in the mechanism is called the rate determining or rate-limitin... | practice : analyzing a mechanism let 's consider the proposed reaction mechanism below : $ \begin { align } 2\text { no } & amp ; \xrightarrow { fast } { \text { n } _2\text { o } _2 } \quad\quad\quad\quad { \text { elementary step 1 } } \ \ { \text { n } _2\text { o } _2 } +\text { h } _2 & amp ; \xrightarrow { slow }... | hi , i have some questions : 1- how we can determine the intermediate ( elementary reactions ) for our overall reaction ? |
key points the reaction mechanism describes the sequence of elementary reactions that must occur to go from reactants to products . reaction intermediates are formed in one step and then consumed in a later step of the reaction mechanism . the slowest step in the mechanism is called the rate determining or rate-limitin... | to test our hypothesis , we run some kinetics experiments to get the following rate law : $ \text { rate } = k [ \text { no } _2 ] ^2 $ since the experimental rate law does not match our predicted rate law , we know immediately that our reaction must involve more than one step . reactions that involve more than one ele... | now , how we can derive intermediate reactions ? |
key points the reaction mechanism describes the sequence of elementary reactions that must occur to go from reactants to products . reaction intermediates are formed in one step and then consumed in a later step of the reaction mechanism . the slowest step in the mechanism is called the rate determining or rate-limitin... | what is the overall reaction ? 2 . what is the rate determining step ? | 2- is there any way , for example fixing some parameters and varying the other one to derive the leaching mechanism ? |
key points the reaction mechanism describes the sequence of elementary reactions that must occur to go from reactants to products . reaction intermediates are formed in one step and then consumed in a later step of the reaction mechanism . the slowest step in the mechanism is called the rate determining or rate-limitin... | let 's start by considering the following reaction between nitrogen dioxide and carbon monoxide : $ \text { no } _2 ( g ) + \text { co } ( g ) \rightarrow \text { no } ( g ) + \text { co } _2 ( g ) $ based on the balanced reaction , we might hypothesize this reaction might occur from a single collision between a molecu... | if a + 2b > c is a third order reaction does it have to be rate = k { a } [ b ] squared ? |
key points the reaction mechanism describes the sequence of elementary reactions that must occur to go from reactants to products . reaction intermediates are formed in one step and then consumed in a later step of the reaction mechanism . the slowest step in the mechanism is called the rate determining or rate-limitin... | in that case , we can use the stoichiometry of the balanced chemical reaction to predict the rate law is first order in $ \text { no } _2 $ and first order in $ \text { co } $ . to test our hypothesis , we run some kinetics experiments to get the following rate law : $ \text { rate } = k [ \text { no } _2 ] ^2 $ since ... | if b is mor influential on rate than a ? |
key points the reaction mechanism describes the sequence of elementary reactions that must occur to go from reactants to products . reaction intermediates are formed in one step and then consumed in a later step of the reaction mechanism . the slowest step in the mechanism is called the rate determining or rate-limitin... | reaction intermediates are formed in one step and then consumed in a later step of the reaction mechanism . the slowest step in the mechanism is called the rate determining step or rate-limiting step . the overall reaction rate is determined by the rates of the steps up to ( and including ) the rate-determining step . | can you use the subscripts of the element as an exponent in the rate law for the slow step ? |
key points the reaction mechanism describes the sequence of elementary reactions that must occur to go from reactants to products . reaction intermediates are formed in one step and then consumed in a later step of the reaction mechanism . the slowest step in the mechanism is called the rate determining or rate-limitin... | introduction : rate law and reaction mechanisms one of the most useful applications of kinetics is the ability to use reaction rates to figure out the reaction mechanism . the reaction mechanism describes the sequence of elementary steps that occur to go from reactants to products . let 's start by considering the foll... | how do you know which elementary steps are slow and fast ? |
key points the reaction mechanism describes the sequence of elementary reactions that must occur to go from reactants to products . reaction intermediates are formed in one step and then consumed in a later step of the reaction mechanism . the slowest step in the mechanism is called the rate determining or rate-limitin... | in other words , we hypothesize this an elementary reaction . in that case , we can use the stoichiometry of the balanced chemical reaction to predict the rate law is first order in $ \text { no } _2 $ and first order in $ \text { co } $ . to test our hypothesis , we run some kinetics experiments to get the following r... | in the introduction , why did we predict the rate law as being first order for both no2 and co ? |
key points the reaction mechanism describes the sequence of elementary reactions that must occur to go from reactants to products . reaction intermediates are formed in one step and then consumed in a later step of the reaction mechanism . the slowest step in the mechanism is called the rate determining or rate-limitin... | 3 . what are the intermediates in this reaction ? how do we evaluate a reaction mechanism ? when evaluating a proposed reaction mechanism , there are two things to check : the elementary reaction equations add up to the overall reaction . the rate law for the overall reaction is consistent with the rate of each element... | is there a way in which you can figure out the elementary steps of a reaction from a given final reaction ? |
key points the reaction mechanism describes the sequence of elementary reactions that must occur to go from reactants to products . reaction intermediates are formed in one step and then consumed in a later step of the reaction mechanism . the slowest step in the mechanism is called the rate determining or rate-limitin... | 3 . what are the intermediates in this reaction ? how do we evaluate a reaction mechanism ? when evaluating a proposed reaction mechanism , there are two things to check : the elementary reaction equations add up to the overall reaction . the rate law for the overall reaction is consistent with the rate of each element... | how do you find the total order of the reaction ? |
key points the reaction mechanism describes the sequence of elementary reactions that must occur to go from reactants to products . reaction intermediates are formed in one step and then consumed in a later step of the reaction mechanism . the slowest step in the mechanism is called the rate determining or rate-limitin... | introduction : rate law and reaction mechanisms one of the most useful applications of kinetics is the ability to use reaction rates to figure out the reaction mechanism . the reaction mechanism describes the sequence of elementary steps that occur to go from reactants to products . let 's start by considering the foll... | do you just add the orders of the reactants ? |
key points the reaction mechanism describes the sequence of elementary reactions that must occur to go from reactants to products . reaction intermediates are formed in one step and then consumed in a later step of the reaction mechanism . the slowest step in the mechanism is called the rate determining or rate-limitin... | how do we evaluate a reaction mechanism ? when evaluating a proposed reaction mechanism , there are two things to check : the elementary reaction equations add up to the overall reaction . the rate law for the overall reaction is consistent with the rate of each elementary step . | how to check whether the given elementary reaction is fast or slow ? |
key points the reaction mechanism describes the sequence of elementary reactions that must occur to go from reactants to products . reaction intermediates are formed in one step and then consumed in a later step of the reaction mechanism . the slowest step in the mechanism is called the rate determining or rate-limitin... | the overall reaction rate is determined by the rates of the steps up to ( and including ) the slowest elementary step . the slowest step in a reaction mechanism is called the rate determining or rate limiting step . for our example mechanism in the previous section , the rate limiting step is the first elementary step ... | does the overall reaction rate always have to be equal to the slow step ? |
overview the indian reservation system was created to keep native americans off of lands that european americans wished to settle . the reservation system allowed indian tribes to govern themselves and to maintain some of their cultural and social traditions . the dawes act of 1887 destroyed the reservation system by s... | the act ended the land allotments created by dawes act and thereby resurrected the reservation system , which remains in place today. $ ^8 $ what do you think ? why was the reservation system initially implemented ? what do you see as the most significant cultural differences between native americans and european ameri... | why was the reservation system initially implemented ? |
overview the indian reservation system was created to keep native americans off of lands that european americans wished to settle . the reservation system allowed indian tribes to govern themselves and to maintain some of their cultural and social traditions . the dawes act of 1887 destroyed the reservation system by s... | the aim of the act was to destroy tribal governing councils and assimilate native americans into mainstream us society by replacing their communal traditions with a culture centered on the individual . to this end , tribal lands were parceled out into individual allotments , and only those indians who accepted the indi... | when these `` tribal governments '' were created were they their own nations or no ? |
overview the indian reservation system was created to keep native americans off of lands that european americans wished to settle . the reservation system allowed indian tribes to govern themselves and to maintain some of their cultural and social traditions . the dawes act of 1887 destroyed the reservation system by s... | the act ended the land allotments created by dawes act and thereby resurrected the reservation system , which remains in place today. $ ^8 $ what do you think ? why was the reservation system initially implemented ? what do you see as the most significant cultural differences between native americans and european ameri... | why was the reservation system initially implemented ? |
overview the indian reservation system was created to keep native americans off of lands that european americans wished to settle . the reservation system allowed indian tribes to govern themselves and to maintain some of their cultural and social traditions . the dawes act of 1887 destroyed the reservation system by s... | why was the reservation system initially implemented ? what do you see as the most significant cultural differences between native americans and european americans ? do you think life was better for native americans on the reservation or on individual plots of land ? | what do you see as the most significant cultural differences between native americans and european americans ? |
a procession for a royal visit on december 17 , 1953 , a newly crowned queen elizabeth ii and her husband prince philip , duke of edinburgh , arrived on the island of fiji , then an english colony , and stayed for three days before continuing on their first tour of the commonwealth nations of england in the pacific isl... | mats what is definitely evident from the photograph are the rolls of woven mats that each woman in the procession carries . like masi , fijian mats served and continue to serve an important purpose in fijian society as a type of ritual exchange and tribute . made by women , fijian mats are begun by stripping , boiling ... | how would people know what type of art to do ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | that is , water has a high heat of vaporization , the amount of energy needed to change one gram of a liquid substance to a gas at constant temperature . water ’ s heat of vaporization is around 540 cal/g at 100 °c , water 's boiling point . note that some molecules of water – ones that happen to have high kinetic ener... | 40 calories more to heat up 1c as it takes in the boiling point ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . | how come there is such a tiny difference , or is it actually a huge difference ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | density of ice and water water ’ s lower density in its solid form is due to the way hydrogen bonds are oriented as it freezes . specifically , in ice , the water molecules are pushed farther apart than they are in liquid water . that means water expands when it freezes . | but why is the distance between molecules in ice bigger than in water ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | because it is less dense , ice floats on the surface of liquid water , as we see for an iceberg or the ice cubes in a glass of iced tea . in lakes and ponds , a layer of ice forms on top of the liquid water , creating an insulating barrier that protects the animals and plant life in the pond below from freezing . why i... | in the last paragraph it says : `` in lakes and ponds , a layer of ice forms on top of the liquid water , creating an insulating barrier ... '' how does ice provide an insulating barrier ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | into the freezer , only to have it crack or explode as the liquid water inside froze and expanded . with most other liquids , solidification—which occurs when the temperature drops and kinetic ( motion ) energy of molecules is reduced—allows molecules to pack more tightly than in liquid form , giving the solid a greate... | why do the fastest-moving molecules leave the liquid ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | that is , water has a high heat of vaporization , the amount of energy needed to change one gram of a liquid substance to a gas at constant temperature . water ’ s heat of vaporization is around 540 cal/g at 100 °c , water 's boiling point . note that some molecules of water – ones that happen to have high kinetic ener... | what happens when you apply heat to a glass of water ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | this structure makes ice less dense than liquid water . density of ice and water water ’ s lower density in its solid form is due to the way hydrogen bonds are oriented as it freezes . specifically , in ice , the water molecules are pushed farther apart than they are in liquid water . | how to estimate density of following substances in increasing order ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | water : solid , liquid , and gas water has unique chemical characteristics in all three states—solid , liquid , and gas—thanks to the ability of its molecules to hydrogen bond with one another . since living things , from human beings to bacteria , have a high water content , understanding the unique chemical features ... | is there really calories like on candy bars in water ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | here , we ’ ll take a closer look at the role of hydrogen bonding in temperature changes , freezing , and vaporization of water . water : solid , liquid , and gas water has unique chemical characteristics in all three states—solid , liquid , and gas—thanks to the ability of its molecules to hydrogen bond with one anoth... | to make sure i understand this correctly , usually when molecules go from liquid to solid they come together , but in the case of water the molecules become more spatial ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | how does that work ? water molecules are very good at forming hydrogen bonds , weak associations between the partially positive and partially negative ends of the molecules . hydrogen bonding explains both the effectiveness of evaporative cooling ( why sweating cools you off ) and the low density of ice ( why ice float... | if hydrogen bonds are regarded as `` weak '' polar covalent bonds , as stated in the definition in an early lesson , why does it take so much ke to break ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | how does that work ? water molecules are very good at forming hydrogen bonds , weak associations between the partially positive and partially negative ends of the molecules . hydrogen bonding explains both the effectiveness of evaporative cooling ( why sweating cools you off ) and the low density of ice ( why ice float... | why are hydrogen bonds called `` weak '' bonds ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | since living things , from human beings to bacteria , have a high water content , understanding the unique chemical features of water in its three states is key to biology . in liquid water , hydrogen bonds are constantly being formed and broken as the water molecules slide past each other . the breaking of these bonds... | i 'm just curious about the situation when the water molecules are in a vaccum ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | that is , water has a high heat of vaporization , the amount of energy needed to change one gram of a liquid substance to a gas at constant temperature . water ’ s heat of vaporization is around 540 cal/g at 100 °c , water 's boiling point . note that some molecules of water – ones that happen to have high kinetic ener... | specific heat of vaporization of water ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | the amount of heat needed to raise the temperature of 1 g water by 1 °c is has its own name , the calorie . because of its high heat capacity , water can minimize changes in temperature . for instance , the specific heat capacity of water is about five times greater than that of sand . | how does the shape of a water molecule affect its high specific heat ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | that is , water has a high heat of vaporization , the amount of energy needed to change one gram of a liquid substance to a gas at constant temperature . water ’ s heat of vaporization is around 540 cal/g at 100 °c , water 's boiling point . note that some molecules of water – ones that happen to have high kinetic ener... | if i put a potato in a pot of boiling water ( water that has reached 100c or close enough ( what actually makes the potato cook , become soft and edible ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | the amount of heat needed to raise the temperature of 1 g water by 1 °c is has its own name , the calorie . because of its high heat capacity , water can minimize changes in temperature . for instance , the specific heat capacity of water is about five times greater than that of sand . the land cools faster than the se... | what is the explanation for why water cools down slower than sand with regards to specific heat capacity ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | density of ice and water water ’ s lower density in its solid form is due to the way hydrogen bonds are oriented as it freezes . specifically , in ice , the water molecules are pushed farther apart than they are in liquid water . that means water expands when it freezes . | in the paragraph of density of ice and water , why are the water molecules pushed farther apart and in other liquids the molecules are not ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | the amount of heat needed to raise the temperature of 1 g water by 1 °c is has its own name , the calorie . because of its high heat capacity , water can minimize changes in temperature . for instance , the specific heat capacity of water is about five times greater than that of sand . | what does high capacity mean ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | the amount of heat needed to raise the temperature of 1 g water by 1 °c is has its own name , the calorie . because of its high heat capacity , water can minimize changes in temperature . for instance , the specific heat capacity of water is about five times greater than that of sand . | what is the difference between heat and temperature ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | heat of vaporization of water just as it takes a lot of heat to increase the temperature of liquid water , it also takes an unusual amount of heat to vaporize a given amount of water , because hydrogen bonds must be broken in order for the molecules to fly off as gas . that is , water has a high heat of vaporization , ... | why do we consider calories to be the amount of energy stored in food ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | into the freezer , only to have it crack or explode as the liquid water inside froze and expanded . with most other liquids , solidification—which occurs when the temperature drops and kinetic ( motion ) energy of molecules is reduced—allows molecules to pack more tightly than in liquid form , giving the solid a greate... | what about molecules at absolute zero temperature , do they really stay in stationary state ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | on the other hand , when the temperature drops and water freezes , water molecules form a crystal structure maintained by hydrogen bonding ( as there is too little heat energy left to break the hydrogen bonds ) . this structure makes ice less dense than liquid water . density of ice and water water ’ s lower density in... | could you please explain more specially ice has a more density than water ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | when a cell freezes , its watery contents expand and its membrane ( just like the soda bottle ) is broken into pieces . heat capacity of water it takes a lot of heat to increase the temperature of liquid water because some of the heat must be used to break hydrogen bonds between the molecules . in other words , water h... | should n't the stronger bonds ( like metallic or ionic ) have a higher heat capacity than water ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | that is , water has a high heat of vaporization , the amount of energy needed to change one gram of a liquid substance to a gas at constant temperature . water ’ s heat of vaporization is around 540 cal/g at 100 °c , water 's boiling point . note that some molecules of water – ones that happen to have high kinetic ener... | if i have a beaker of water and heat it for 5 mins , if i want to find net q transferred to the water , and 1g of water is lost in evaporation , does the formula become q=cm ( tf-ti ) +lv ( 1 ) ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | when the heat is raised ( for instance , as water is boiled ) , the higher kinetic energy of the water molecules causes the hydrogen bonds to break completely and allows water molecules to escape into the air as gas . we observe this gas as water vapor or steam . on the other hand , when the temperature drops and water... | i.e has energy been used to vaporise some water , but not raise the temperature ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | on the other hand , when the temperature drops and water freezes , water molecules form a crystal structure maintained by hydrogen bonding ( as there is too little heat energy left to break the hydrogen bonds ) . this structure makes ice less dense than liquid water . density of ice and water water ’ s lower density in... | why the water molecule in ice ca n't be closer than in water ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | we observe this gas as water vapor or steam . on the other hand , when the temperature drops and water freezes , water molecules form a crystal structure maintained by hydrogen bonding ( as there is too little heat energy left to break the hydrogen bonds ) . this structure makes ice less dense than liquid water . densi... | is it because in the ice state , the water molecule has less energy to resist the repel energy between the molecules and the repel energy is not big enough to break the hydrogen , so they can only connect with each other with certain distance ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | the amount of heat needed to raise the temperature of 1 g water by 1 °c is has its own name , the calorie . because of its high heat capacity , water can minimize changes in temperature . for instance , the specific heat capacity of water is about five times greater than that of sand . the land cools faster than the se... | why is specific heat capacity important within the food industry ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | that is , water has a high heat of vaporization , the amount of energy needed to change one gram of a liquid substance to a gas at constant temperature . water ’ s heat of vaporization is around 540 cal/g at 100 °c , water 's boiling point . note that some molecules of water – ones that happen to have high kinetic ener... | how does specific heat affect the vaporization speed of water ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | the land cools faster than the sea once the sun goes down , and the slow-cooling water can release heat to nearby land during the night . water is also used by warm-blooded animals to distribute heat through their bodies : it acts similarly to a car ’ s cooling system , moving heat from warm places to cool places , hel... | does evapotranspiration in plants works similarly ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | we observe this gas as water vapor or steam . on the other hand , when the temperature drops and water freezes , water molecules form a crystal structure maintained by hydrogen bonding ( as there is too little heat energy left to break the hydrogen bonds ) . this structure makes ice less dense than liquid water . | why do hydrogen bonds release energy when they form ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | the amount of heat needed to raise the temperature of 1 g water by 1 °c is has its own name , the calorie . because of its high heat capacity , water can minimize changes in temperature . for instance , the specific heat capacity of water is about five times greater than that of sand . the land cools faster than the se... | can specific heat be negative in any situation ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | heat capacity of water it takes a lot of heat to increase the temperature of liquid water because some of the heat must be used to break hydrogen bonds between the molecules . in other words , water has a high specific heat capacity , which is defined as the amount of heat needed to raise the temperature of one gram of... | what does the evaporating cooling of a human have in common with the one with a lake or a river ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | how does that work ? water molecules are very good at forming hydrogen bonds , weak associations between the partially positive and partially negative ends of the molecules . hydrogen bonding explains both the effectiveness of evaporative cooling ( why sweating cools you off ) and the low density of ice ( why ice float... | so , the hydrogen bonds keep the molecules at a fix distant ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | on the other hand , when the temperature drops and water freezes , water molecules form a crystal structure maintained by hydrogen bonding ( as there is too little heat energy left to break the hydrogen bonds ) . this structure makes ice less dense than liquid water . density of ice and water water ’ s lower density in... | if water freezing results in a less dense solid due to the fact that it has a hydrogen bond , then does methane do the same thing ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | since living things , from human beings to bacteria , have a high water content , understanding the unique chemical features of water in its three states is key to biology . in liquid water , hydrogen bonds are constantly being formed and broken as the water molecules slide past each other . the breaking of these bonds... | why do hydrogen bonds have to be broken in order to increase water molecules ' speed ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | water molecules are very good at forming hydrogen bonds , weak associations between the partially positive and partially negative ends of the molecules . hydrogen bonding explains both the effectiveness of evaporative cooling ( why sweating cools you off ) and the low density of ice ( why ice floats ) . here , we ’ ll ... | what about the ice in the north and south arctic caps area ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | water is an anomaly ( that is , a weird standout ) in its lower density as a solid . because it is less dense , ice floats on the surface of liquid water , as we see for an iceberg or the ice cubes in a glass of iced tea . in lakes and ponds , a layer of ice forms on top of the liquid water , creating an insulating bar... | what cause for some of the type of icebergs to become small on the surface but dense colossus of been tough as metal at the bottom of the ocean ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | the amount of heat needed to raise the temperature of 1 g water by 1 °c is has its own name , the calorie . because of its high heat capacity , water can minimize changes in temperature . for instance , the specific heat capacity of water is about five times greater than that of sand . the land cools faster than the se... | what determines the specific heat capacity of different substances ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | since living things , from human beings to bacteria , have a high water content , understanding the unique chemical features of water in its three states is key to biology . in liquid water , hydrogen bonds are constantly being formed and broken as the water molecules slide past each other . the breaking of these bonds... | is water made of 2 oxygen atoms and 1 hydrogen atom ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | on the other hand , when the temperature drops and water freezes , water molecules form a crystal structure maintained by hydrogen bonding ( as there is too little heat energy left to break the hydrogen bonds ) . this structure makes ice less dense than liquid water . density of ice and water water ’ s lower density in... | what is the density of water and ice ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard work studying the properties of water , you recognize both the sweat on your arms and the floating ice cubes in your glass as examples of water 's amazing capacity for hydrogen bonding .... | how do you think the properties of the ballon have changed ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | the amount of heat needed to raise the temperature of 1 g water by 1 °c is has its own name , the calorie . because of its high heat capacity , water can minimize changes in temperature . for instance , the specific heat capacity of water is about five times greater than that of sand . | how does high heat of vaporization life on earth ? |
introduction let ’ s imagine that it ’ s a hot day . you ’ ve just been out in the sun for awhile , and you ’ re sweating quite a bit as you sit down and grab a glass of cool ice water . you idly notice both the sweat beads on your arms and the chunks of ice floating at the top of your water glass . thanks to your hard... | here , we ’ ll take a closer look at the role of hydrogen bonding in temperature changes , freezing , and vaporization of water . water : solid , liquid , and gas water has unique chemical characteristics in all three states—solid , liquid , and gas—thanks to the ability of its molecules to hydrogen bond with one anoth... | boiling need tempreture to liquid turn to gas , why evaporation do n't need tempreture ? |
the sat essay—part one focus : becoming familiar with the sat® essay student objective understand the scope and purpose of the task of the sat essay . before the lesson ☐ review chapter 14 of the sat study guide for students . ☐ preview the sat essay overview video . ☐ preview and print ( if necessary ) the student mat... | before the lesson ☐ review chapter 14 of the sat study guide for students . ☐ preview the sat essay overview video . ☐ preview and print ( if necessary ) the student materials . | how long should the essay usually be ? |
in all world cultures , artists honor remarkable leaders by creating lasting works of art in their honor . historical leaders in the west , like charlemagne and alexander the great were celebrated for their accomplishments during their lifetime and remembered through many works of art created to preserve their legacy .... | why are mishe mishyaang mambul and others commemorated in the arts of africa largely unknown to us ? unlike in euro-american contexts , history in sub-saharan africa was not written down by members of cultural communities until colonialism in the late nineteenth and early twentieth centuries . instead of written record... | in paragraph 2 , it mentions that sub saharan african communities did not keep written records , and while orthographic scripts were rare on the continent , would ge'ez not be a sub saharan script , and an ancient one at that ? |
in all world cultures , artists honor remarkable leaders by creating lasting works of art in their honor . historical leaders in the west , like charlemagne and alexander the great were celebrated for their accomplishments during their lifetime and remembered through many works of art created to preserve their legacy .... | the ibol is a signifier that gives the ndop its particular identity , making it clear who the sculpture portrays and what reign it represents . a drum with a severed hand is the ibol for mishe mishyaang mambul ’ s reign , and that helps us identify the sculpture as his likeness . other styles or conventions that were f... | why was king mishe mishyaang mambul 's ibol a severed hand with a drum ? |
in all world cultures , artists honor remarkable leaders by creating lasting works of art in their honor . historical leaders in the west , like charlemagne and alexander the great were celebrated for their accomplishments during their lifetime and remembered through many works of art created to preserve their legacy .... | he was even the recipient of his own praise song . at the height of his reign in 1710 , he commissioned an idealized portrait-statue called an ndop . with the commission of his ndop , mishe mishyaang mambul recorded his reign for posterity and solidified his accomplishments amongst the pantheon of his predecessors . | if the statue was commissioned in 1710 , then why does the identification i received and the picture identification say 1760-80 ? |
in all world cultures , artists honor remarkable leaders by creating lasting works of art in their honor . historical leaders in the west , like charlemagne and alexander the great were celebrated for their accomplishments during their lifetime and remembered through many works of art created to preserve their legacy .... | text by roger d. arnold additional reading binkley , david a. and patricia darish . kuba . milan : 5 continents press , 2010 . | where were ndops displayed at the palaces of kuba kings ? |
what you should be familiar with before this lesson the gcf ( greatest common factor ) of two or more monomials is the product of all their common prime factors . for example , the gcf of $ 6x $ and $ 4x^2 $ is $ 2x $ . if this is new to you , you 'll want to check out our greatest common factors of monomials article .... | for example , $ 2x^2+12x=2x ( x+6 ) $ . we factored out common binomial factors which resulted in an expression equal to the product of two binomials . for example $ x ( x+1 ) +2 ( x+1 ) = ( x+1 ) ( x+2 ) $ . | how would you factor an expression say as 49n squared - 16 to equal a product that has two binomials in parenthesis like this ( ) ( ) ? |
what you should be familiar with before this lesson the gcf ( greatest common factor ) of two or more monomials is the product of all their common prime factors . for example , the gcf of $ 6x $ and $ 4x^2 $ is $ 2x $ . if this is new to you , you 'll want to check out our greatest common factors of monomials article .... | what you should be familiar with before this lesson the gcf ( greatest common factor ) of two or more monomials is the product of all their common prime factors . for example , the gcf of $ 6x $ and $ 4x^2 $ is $ 2x $ . | why ca n't we factor a polynomial by using other common factors ? |
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