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although the entertainment industry is constantly releasing a new hollywood blockbuster , tv series , video game , graphic novel , or comic book about batman ’ s latest adventures , it is important to understand that the extraordinary image of a human being with bat features and qualities existed long ago in the americ... | although the entertainment industry is constantly releasing a new hollywood blockbuster , tv series , video game , graphic novel , or comic book about batman ’ s latest adventures , it is important to understand that the extraordinary image of a human being with bat features and qualities existed long ago in the americ... | is this institutional tomb robbery consider science ? |
buddhism in china buddhism probably arrived in china during the han dynasty ( 206 b.c.e . - 220 c.e . ) , and became a central feature of chinese culture during the period of division that followed . buddhist teaching ascribed great merit to the reproduction of images of buddhas and bodhisattvas , in which the artisans... | buddhism in china buddhism probably arrived in china during the han dynasty ( 206 b.c.e . - 220 c.e . | was there a religion native to china before buddhism ? |
buddhism in china buddhism probably arrived in china during the han dynasty ( 206 b.c.e . - 220 c.e . ) , and became a central feature of chinese culture during the period of division that followed . buddhist teaching ascribed great merit to the reproduction of images of buddhas and bodhisattvas , in which the artisans... | proceedings of the british museum study day 2002 ( london , british museum occasional paper 142 , 2004 ) . h. wang , money on the silk road . the evidence from eastern central asiato c. ad 800 ( london , british museum press , 2004 ) . | did buddism spread through the silk route ? |
buddhism in china buddhism probably arrived in china during the han dynasty ( 206 b.c.e . - 220 c.e . ) , and became a central feature of chinese culture during the period of division that followed . buddhist teaching ascribed great merit to the reproduction of images of buddhas and bodhisattvas , in which the artisans... | buddhism in china buddhism probably arrived in china during the han dynasty ( 206 b.c.e . - 220 c.e . | how and when did buddhism take over from confucianism ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . | whats the basic difference between an anthropologist and a paleontologist ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . | what does `` b.c.e '' stand for ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | even for events that happened yesterday , two direct observers could have two completely different perceptions of what happened , how , and why . you can imagine that things get even tougher for prehistory , or the events that occurred before the existence of written records . but we still have many tools . | why do we have to always base things on assumption ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce , which is the accepted date at which history `` begins '' there . written records give historians resources to deal with that are mo... | what prehistoric skills for communications existed and what those skills were ( as and when discovered ) that have been discovered which assisted in understanding and writing the prehistoric information of homosapiens ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | written records our main tool as historians is what has been written by those who came before us . in fact , this is what formally defines history and sometimes sets it apart from archaeology and anthropology . for example , the oldest written records archaeologists have discovered in egypt are from over 5,000 years ag... | what is the difference between anthropology and paleontology ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce , which is the accepted date at which history `` begins '' there . written records give historians resources to deal with that are mo... | can someone help me explain the paradox of `` the oldest written records archaeologists have discovered in egypt are from over 5,000 years ago '' , and `` archaeologists have discovered written records in egypt from 3200 bce , which is the accepted date at which history begins there '' ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | many things that historians take as a given today will be questioned by future historians armed with new tools and new evidence . what do you think ? should prehistory and history be divided as they currently are—prehistory meaning before writing , and history meaning after writing ? | how would you know that these are actually accurate and there might be more out there that 's more than you think there is like proving if mythology was real and not fake ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | you can imagine that things get even tougher for prehistory , or the events that occurred before the existence of written records . but we still have many tools . archaeologists can excavate ancient structures and burial sites and begin to infer how the people lived from fossils ( like human remains ) and artifacts ( h... | there are many years of history and i am very interested i wonder when did the world start ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce , which is the accepted date at which history `` begins '' there . written records give historians resources to deal with that are mo... | the third bullet point at the top says that hieroglyphs in egypt were the oldest writing found , from 3200 bce , but was n't sumerian text created in 3000 bce ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | what do you think ? should prehistory and history be divided as they currently are—prehistory meaning before writing , and history meaning after writing ? what are some other ways archaeologists and historians might consider dividing the study of the past ? | can a group of symbols scratched on a rock representing something be considered writing ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | but we should never let the tools and knowledge we have make us overconfident . after all , every piece of historical evidence needs to be closely read , sourced , interpreted , contextualized , and compared with other available sources . these kinds of thinking and questioning are the historians ' toolkit . | in which language the historical documents available at egypt ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | archaeologists can estimate the age of fossils and artifacts through several techniques . carbon dating measures the amount of radioactive carbon in fossils to place them in time . age can also be determined by identifying the age of the layer of rock that the artifacts are buried in . | when explaining carbon dating what does bump off mean ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . | when you say that the neutron bumps off the proton ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | even for events that happened yesterday , two direct observers could have two completely different perceptions of what happened , how , and why . you can imagine that things get even tougher for prehistory , or the events that occurred before the existence of written records . but we still have many tools . | maybe earlier societies used pictures to 'write ' things too ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | similarly , geneticists can piece together how humanity may have spread and intermingled based on genetic similarities and differences in populations today . $ ^1 $ uncertainty remains by putting all of these pieces together , we can construct surprisingly rich narratives of the distant past . but we should never let t... | in the eighth paragraph , how are the narratives surprisingly rich ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | carbon dating measures the amount of radioactive carbon in fossils to place them in time . age can also be determined by identifying the age of the layer of rock that the artifacts are buried in . this is called stratigraphic dating , from the latin word_stratum_ , meaning `` layer . '' | how can u tell the age of a dinosaur bone that you randomly find in a layered ground platform like-landscape structure ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | archaeologists can estimate the age of fossils and artifacts through several techniques . carbon dating measures the amount of radioactive carbon in fossils to place them in time . age can also be determined by identifying the age of the layer of rock that the artifacts are buried in . | how do we know that carbon dating is accurate ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . | what if the hyroglyphs were a translation of a slang greek ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | it 's also 40 times as distant in the past as the earliest written records we have found . think about the scope of what must have happened during that time : adventures , sorrows , environmental change , and the rise and fall of civilizations . as historians , we have the privilege of exploring this vast expanse of hu... | is the rise of domestication somehow connected to the rise of agriculture ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | what are some other ways archaeologists and historians might consider dividing the study of the past ? how much information—artifacts , fossils , or other evidence—do you think needs to be present in order for something to be “ knowable ” ? | why would people have so much intrest in the paloelithic life ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | should prehistory and history be divided as they currently are—prehistory meaning before writing , and history meaning after writing ? what are some other ways archaeologists and historians might consider dividing the study of the past ? how much information—artifacts , fossils , or other evidence—do you think needs to... | what are some other ways archaeologists and historians might consider dividing the study of the past ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | archaeologists can estimate the age of fossils and artifacts through several techniques . carbon dating measures the amount of radioactive carbon in fossils to place them in time . age can also be determined by identifying the age of the layer of rock that the artifacts are buried in . | what is the difference between carbon dating and stratigraphic dating ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | as historians , we have the privilege of exploring this vast expanse of human experience . written records our main tool as historians is what has been written by those who came before us . in fact , this is what formally defines history and sometimes sets it apart from archaeology and anthropology . | what is historians main tool ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | the scope of history historians currently think that anatomically modern humans—our subspecies of homosapiens sapiens—have been around for roughly 200,000 of the planet ’ s 4.5 billion years . and even though 200,000 years is less that one 20,000th of the history of the planet , it is still a very long time ! for conte... | how can be the skeleton in layer or in the land for very long time ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | even with written records , though , we have to be careful and thoughtful . the writing may be in a dead language that we know little about . if one tribe conquers another , we might only get the biased , one-sided story of those who won and wrote about it . | what are some examples of dead languages ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | even with written records , though , we have to be careful and thoughtful . the writing may be in a dead language that we know little about . if one tribe conquers another , we might only get the biased , one-sided story of those who won and wrote about it . | how do you determine if a language is a dead language ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . | why was scholars define prehistory ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | what do you think ? should prehistory and history be divided as they currently are—prehistory meaning before writing , and history meaning after writing ? what are some other ways archaeologists and historians might consider dividing the study of the past ? | what is the difference between prehistory and history ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | you can imagine that things get even tougher for prehistory , or the events that occurred before the existence of written records . but we still have many tools . archaeologists can excavate ancient structures and burial sites and begin to infer how the people lived from fossils ( like human remains ) and artifacts ( h... | what tools do archaeologists use ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | archaeologists can estimate the age of fossils and artifacts through several techniques . carbon dating measures the amount of radioactive carbon in fossils to place them in time . age can also be determined by identifying the age of the layer of rock that the artifacts are buried in . | is bce or bc earlier in time ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | even today , we can only piece together a tiny fragment of all that has occurred . and a lot of that understanding could very well be wrong because it is inevitably partial and incomplete . many things that historians take as a given today will be questioned by future historians armed with new tools and new evidence . ... | if historians are willing to acknowledge that the writings of civilizations or man could be biased or untrue , why use them as a `` credible '' source of information ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | as historians , we have the privilege of exploring this vast expanse of human experience . written records our main tool as historians is what has been written by those who came before us . in fact , this is what formally defines history and sometimes sets it apart from archaeology and anthropology . | has there been any evidence that languages written in stone may have been destroyed by a conquering tribes or armies ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | how would we be able to determine that man destroyed the hieroglyphs and that it was n't the simple decay of time that wiped out these early records of recorded history ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | archaeologists can estimate the age of fossils and artifacts through several techniques . carbon dating measures the amount of radioactive carbon in fossils to place them in time . age can also be determined by identifying the age of the layer of rock that the artifacts are buried in . | do the archeologist do more than one carbon dating measurements ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | what are some other ways archaeologists and historians might consider dividing the study of the past ? how much information—artifacts , fossils , or other evidence—do you think needs to be present in order for something to be “ knowable ” ? | what happens when historisns find new information that contradicts information thay have found previously , how do they know which information to trust ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | you can imagine that things get even tougher for prehistory , or the events that occurred before the existence of written records . but we still have many tools . archaeologists can excavate ancient structures and burial sites and begin to infer how the people lived from fossils ( like human remains ) and artifacts ( h... | can you tell me more about the tools mentioned in written records that archaeologists use to excavate ancient structures and burial sites ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | as historians , we have the privilege of exploring this vast expanse of human experience . written records our main tool as historians is what has been written by those who came before us . in fact , this is what formally defines history and sometimes sets it apart from archaeology and anthropology . | i am confused written was invented in egypt or mesopotamia ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | but we still have many tools . archaeologists can excavate ancient structures and burial sites and begin to infer how the people lived from fossils ( like human remains ) and artifacts ( human-made items ) . archaeologists can estimate the age of fossils and artifacts through several techniques . | in the first paragraph , why is the human species now listed as homo sapiens sapiens ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | this is called stratigraphic dating , from the latin word_stratum_ , meaning `` layer . '' linguists can often piece together possible human migrations and connections based on similarities in modern , living languages . similarly , geneticists can piece together how humanity may have spread and intermingled based on g... | what evidence have we recently found to say our modern human species has changed ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . | so was it the sumerian civilization that began writting or was the egyptians ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | what do you think ? should prehistory and history be divided as they currently are—prehistory meaning before writing , and history meaning after writing ? what are some other ways archaeologists and historians might consider dividing the study of the past ? | also do hieroglyphs count as history or pre-history ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | should prehistory and history be divided as they currently are—prehistory meaning before writing , and history meaning after writing ? what are some other ways archaeologists and historians might consider dividing the study of the past ? how much information—artifacts , fossils , or other evidence—do you think needs to... | what are some other ways archaeologists and historians might consider dividing the study of the past ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | should prehistory and history be divided as they currently are—prehistory meaning before writing , and history meaning after writing ? what are some other ways archaeologists and historians might consider dividing the study of the past ? how much information—artifacts , fossils , or other evidence—do you think needs to... | if historians consider mythology and lore that correlates between regions but that are n't introduced at the same time frame is it common for them to use it to see when the culture and people traveled ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | in fact , this is what formally defines history and sometimes sets it apart from archaeology and anthropology . for example , the oldest written records archaeologists have discovered in egypt are from over 5,000 years ago ; the date when they were created is the currently accepted date at which formal history ( as opp... | is someone working on sharing/teaching a common world view ? |
overview scholars define prehistory as events that occurred before the existence of written records in a given culture or society . history refers to the time period after the invention of written records in a given culture or society . archaeologists have discovered written records in egypt from as early as 3200 bce ,... | and a lot of that understanding could very well be wrong because it is inevitably partial and incomplete . many things that historians take as a given today will be questioned by future historians armed with new tools and new evidence . what do you think ? | in the conclusion , is there an example of a future tool that historians are developing to better tell the stories of prehistory ? |
key points mixtures with uniform composition are called homogeneous mixtures or solutions . mixtures with non-uniform composition are heterogeneous mixtures . the chemical in the mixture that is present in the largest amount is called the solvent , and the other components are called solutes . molarity or molar concent... | example 2 : making a solution with a specific concentration sometimes we have a desired concentration and volume of solution , and we want to know how much solute we need to make the solution . in that case , we can rearrange the molarity equation to solve for the moles of solute . $ \text { mol solute } = { \text { mo... | i was told in school that molarity should be moles/dm^3 , but is this different from moles/litres ? |
key points mixtures with uniform composition are called homogeneous mixtures or solutions . mixtures with non-uniform composition are heterogeneous mixtures . the chemical in the mixture that is present in the largest amount is called the solvent , and the other components are called solutes . molarity or molar concent... | the molarity or molar concentration of a solute is defined as the number of moles of solute per liter of solution ( not per liter of solvent ! ) : $ \text { molarity } = \dfrac { \text { mol solute } } { \text { l of solution } } $ molarity has units of $ \dfrac { \text { mol } } { \text { liter } } $ , which can be ab... | in the question that says : is molarity the same thing as molality ? |
key points mixtures with uniform composition are called homogeneous mixtures or solutions . mixtures with non-uniform composition are heterogeneous mixtures . the chemical in the mixture that is present in the largest amount is called the solvent , and the other components are called solutes . molarity or molar concent... | concept check : bronze is an alloy that can be thought of as a solid solution of ~ $ 88\ % $ copper mixed with $ 12\ % $ tin . what is the solute and solvent in bronze ? example 1 : calculating the molar concentration of a solute let 's consider a solution made by dissolving $ 2.355\ , \text g $ of sulfuric acid , $ \t... | in hint one how do you know there is .1l of solute ? |
key points mixtures with uniform composition are called homogeneous mixtures or solutions . mixtures with non-uniform composition are heterogeneous mixtures . the chemical in the mixture that is present in the largest amount is called the solvent , and the other components are called solutes . molarity or molar concent... | one example of a mixture is the human body . did you know that the human body is approximately $ 57\ % $ water by mass ? we are basically an assortment of biological molecules , gases , and inorganic ions dissolved in water . i do n't know about you , but i find that pretty mind-boggling ! | how would you find the molarity of so2 if you have it dissolved in 100 grams of water at 85 degrees celcius ? |
key points mixtures with uniform composition are called homogeneous mixtures or solutions . mixtures with non-uniform composition are heterogeneous mixtures . the chemical in the mixture that is present in the largest amount is called the solvent , and the other components are called solutes . molarity or molar concent... | step $ 3.~ $ add water to the $ \text { nacl } $ until the total volume of the solution is $ 250\ , \text { ml } $ . step $ 4.~ $ stir until the $ \text { nacl } $ is completely dissolved . the accuracy of our molar concentration depends on our choice of glassware , as well as the accuracy of the balance we use to meas... | ( or if the equation happened to have 4ki , could we simply multiply 0.1l x 4 ) ? |
key points mixtures with uniform composition are called homogeneous mixtures or solutions . mixtures with non-uniform composition are heterogeneous mixtures . the chemical in the mixture that is present in the largest amount is called the solvent , and the other components are called solutes . molarity or molar concent... | if we want to extremely precise , such as when making a standard solution for an analytical chemistry experiment , we would probably mix the solute and solvent in a volumetric flask ( see picture below ) . summary mixtures with uniform composition are called homogeneous solutions . mixtures with non-uniform composition... | can someone please give me some examples of some heterogeneous and homogeneous things ? |
key points mixtures with uniform composition are called homogeneous mixtures or solutions . mixtures with non-uniform composition are heterogeneous mixtures . the chemical in the mixture that is present in the largest amount is called the solvent , and the other components are called solutes . molarity or molar concent... | the total volume of the solution is $ 50.0\ , \text { ml } $ . what is the molar concentration of sulfuric acid , $ [ \text h_2 \text { so } _4 ] $ ? to find $ [ \text h_2 \text { so } _4 ] $ we need to find out how many moles of sulfuric acid are in solution . | so if the sulfuric acid no longer exists in solution after disassociating , then how can we say that the molar concentration of h+ is double the molar concentration of a solute that no longer exists ? |
key points mixtures with uniform composition are called homogeneous mixtures or solutions . mixtures with non-uniform composition are heterogeneous mixtures . the chemical in the mixture that is present in the largest amount is called the solvent , and the other components are called solutes . molarity or molar concent... | the molarity or molar concentration of a solute is defined as the number of moles of solute per liter of solution ( not per liter of solvent ! ) : $ \text { molarity } = \dfrac { \text { mol solute } } { \text { l of solution } } $ molarity has units of $ \dfrac { \text { mol } } { \text { liter } } $ , which can be ab... | what is the difference between molarity and molality ? |
key points mixtures with uniform composition are called homogeneous mixtures or solutions . mixtures with non-uniform composition are heterogeneous mixtures . the chemical in the mixture that is present in the largest amount is called the solvent , and the other components are called solutes . molarity or molar concent... | what is the molar concentration of sulfuric acid , $ [ \text h_2 \text { so } _4 ] $ ? to find $ [ \text h_2 \text { so } _4 ] $ we need to find out how many moles of sulfuric acid are in solution . we can convert the mass of the solute to moles using the molecular weight of sulfuric acid , $ 98.08\ , \dfrac { \text g ... | where can i find out how to find the molarity after adding the volumes of 2 solutions ? |
key points mixtures with uniform composition are called homogeneous mixtures or solutions . mixtures with non-uniform composition are heterogeneous mixtures . the chemical in the mixture that is present in the largest amount is called the solvent , and the other components are called solutes . molarity or molar concent... | example 1 : calculating the molar concentration of a solute let 's consider a solution made by dissolving $ 2.355\ , \text g $ of sulfuric acid , $ \text h_2 \text { so } _4 $ , in water . the total volume of the solution is $ 50.0\ , \text { ml } $ . what is the molar concentration of sulfuric acid , $ [ \text h_2 \te... | what is the molarity of a kcl solution made by diluting 75.0 ml of a 0.200 m solution to a final volume of 100. ml ? |
key points mixtures with uniform composition are called homogeneous mixtures or solutions . mixtures with non-uniform composition are heterogeneous mixtures . the chemical in the mixture that is present in the largest amount is called the solvent , and the other components are called solutes . molarity or molar concent... | we can convert the mass of the solute to moles using the molecular weight of sulfuric acid , $ 98.08\ , \dfrac { \text g } { \text { mol } } $ : $ \text { mol h } _2\text { so } _4=2.355\ , \cancel { \text { g h } _2\text { so } _4 } \times \dfrac { 1\ , \text { mol } } { 98.08\ , \cancel { \text { g } } } = 0.02401\ ,... | how do i know the concentration of solute in the entire solution ? |
key points mixtures with uniform composition are called homogeneous mixtures or solutions . mixtures with non-uniform composition are heterogeneous mixtures . the chemical in the mixture that is present in the largest amount is called the solvent , and the other components are called solutes . molarity or molar concent... | the molar concentration of the solute is sometimes abbreviated by putting square brackets around the chemical formula of the solute . for example , the concentration of chloride ions in a solution can be written as $ [ \text { cl } ^- ] $ . molar concentration allows us to convert between the volume of the solution and... | how do i determine the molarity of magnesium ions in a solution ? |
key points mixtures with uniform composition are called homogeneous mixtures or solutions . mixtures with non-uniform composition are heterogeneous mixtures . the chemical in the mixture that is present in the largest amount is called the solvent , and the other components are called solutes . molarity or molar concent... | we can convert the mass of the solute to moles using the molecular weight of sulfuric acid , $ 98.08\ , \dfrac { \text g } { \text { mol } } $ : $ \text { mol h } _2\text { so } _4=2.355\ , \cancel { \text { g h } _2\text { so } _4 } \times \dfrac { 1\ , \text { mol } } { 98.08\ , \cancel { \text { g } } } = 0.02401\ ,... | what is the molar concentration of this solution ? |
key points mixtures with uniform composition are called homogeneous mixtures or solutions . mixtures with non-uniform composition are heterogeneous mixtures . the chemical in the mixture that is present in the largest amount is called the solvent , and the other components are called solutes . molarity or molar concent... | what is the molar concentration of sulfuric acid , $ [ \text h_2 \text { so } _4 ] $ ? to find $ [ \text h_2 \text { so } _4 ] $ we need to find out how many moles of sulfuric acid are in solution . we can convert the mass of the solute to moles using the molecular weight of sulfuric acid , $ 98.08\ , \dfrac { \text g ... | how do you find the molarity of the ions in the compound ? |
key points mixtures with uniform composition are called homogeneous mixtures or solutions . mixtures with non-uniform composition are heterogeneous mixtures . the chemical in the mixture that is present in the largest amount is called the solvent , and the other components are called solutes . molarity or molar concent... | example 1 : calculating the molar concentration of a solute let 's consider a solution made by dissolving $ 2.355\ , \text g $ of sulfuric acid , $ \text h_2 \text { so } _4 $ , in water . the total volume of the solution is $ 50.0\ , \text { ml } $ . what is the molar concentration of sulfuric acid , $ [ \text h_2 \te... | if there is 3 ml of salt dissolved in 18 ml of acid , the concentration of the solution is ? |
key points mixtures with uniform composition are called homogeneous mixtures or solutions . mixtures with non-uniform composition are heterogeneous mixtures . the chemical in the mixture that is present in the largest amount is called the solvent , and the other components are called solutes . molarity or molar concent... | example 1 : calculating the molar concentration of a solute let 's consider a solution made by dissolving $ 2.355\ , \text g $ of sulfuric acid , $ \text h_2 \text { so } _4 $ , in water . the total volume of the solution is $ 50.0\ , \text { ml } $ . what is the molar concentration of sulfuric acid , $ [ \text h_2 \te... | if the density of said solution is 1.02g/ml , what is our percent by mass of barium iodide ? |
key points mixtures with uniform composition are called homogeneous mixtures or solutions . mixtures with non-uniform composition are heterogeneous mixtures . the chemical in the mixture that is present in the largest amount is called the solvent , and the other components are called solutes . molarity or molar concent... | for example , the concentration of chloride ions in a solution can be written as $ [ \text { cl } ^- ] $ . molar concentration allows us to convert between the volume of the solution and the moles ( or mass ) of the solute . concept check : bronze is an alloy that can be thought of as a solid solution of ~ $ 88\ % $ co... | is molecular weight the same thing as molar mass ? |
key points mixtures with uniform composition are called homogeneous mixtures or solutions . mixtures with non-uniform composition are heterogeneous mixtures . the chemical in the mixture that is present in the largest amount is called the solvent , and the other components are called solutes . molarity or molar concent... | in that case , we can rearrange the molarity equation to solve for the moles of solute . $ \text { mol solute } = { \text { molarity } } \times { \text { l of solution } } $ for example , let 's say we want to make $ 0.250\ , \text { l } $ of an aqueous solution with $ [ \text { nacl } ] =0.800\ , \text { m } $ . what ... | in a problem like the one with the 0.250 l of an aqueous solution and 0.800 m , what if you were given ml ? |
key points mixtures with uniform composition are called homogeneous mixtures or solutions . mixtures with non-uniform composition are heterogeneous mixtures . the chemical in the mixture that is present in the largest amount is called the solvent , and the other components are called solutes . molarity or molar concent... | what is the molar concentration of sulfuric acid , $ [ \text h_2 \text { so } _4 ] $ ? to find $ [ \text h_2 \text { so } _4 ] $ we need to find out how many moles of sulfuric acid are in solution . we can convert the mass of the solute to moles using the molecular weight of sulfuric acid , $ 98.08\ , \dfrac { \text g ... | how many grams of k2cro4 are needed ? |
some mountains are made of solid rock , like the rocky mountains or the swiss alps . but , some mountains are actually volcanoes . volcanoes are vents , or openings in the earth 's crust , that release ash , gases and steam , and hot liquid rock called lava . when the lava cools and hardens , it forms into the cone‐sha... | hot spots some volcanoes pop up in random places , often far from the edge of a tectonic plate . these volcanoes are found over `` hot spots . '' a hot spot is an intensely hot area in the mantle below the earth 's crust . the heat that fuels the hot spot comes from very deep in the earth . | does the land have to move in order to be a hot spot ? |
some mountains are made of solid rock , like the rocky mountains or the swiss alps . but , some mountains are actually volcanoes . volcanoes are vents , or openings in the earth 's crust , that release ash , gases and steam , and hot liquid rock called lava . when the lava cools and hardens , it forms into the cone‐sha... | most of the world 's volcanoes are found around the edges of tectonic plates , both on land and in the oceans . on land , volcanoes form when one tectonic plate moves under another . usually a thin , heavy oceanic plate subducts , or moves under , a thicker continental plate . | how can yellow stone still be active if the tectonic plate is moving ? |
some mountains are made of solid rock , like the rocky mountains or the swiss alps . but , some mountains are actually volcanoes . volcanoes are vents , or openings in the earth 's crust , that release ash , gases and steam , and hot liquid rock called lava . when the lava cools and hardens , it forms into the cone‐sha... | while the hot spot stays in one place , rooted to its deep source of heat , the tectonic plate is slowly moving above it . as the plate moves , so does the volcano , and another one forms in its place . the volcano that moved is no longer active . this is why a chain of extinct volcanoes is often found extending from a... | is the volcano under the ocean floor can have a possibility to explode like the youngest volcano in land ? |
some mountains are made of solid rock , like the rocky mountains or the swiss alps . but , some mountains are actually volcanoes . volcanoes are vents , or openings in the earth 's crust , that release ash , gases and steam , and hot liquid rock called lava . when the lava cools and hardens , it forms into the cone‐sha... | as the plate moves , so does the volcano , and another one forms in its place . the volcano that moved is no longer active . this is why a chain of extinct volcanoes is often found extending from a hot spot . | is mount st. helens the most active volcano on the face of planet earth ? |
some mountains are made of solid rock , like the rocky mountains or the swiss alps . but , some mountains are actually volcanoes . volcanoes are vents , or openings in the earth 's crust , that release ash , gases and steam , and hot liquid rock called lava . when the lava cools and hardens , it forms into the cone‐sha... | as the plate moves , so does the volcano , and another one forms in its place . the volcano that moved is no longer active . this is why a chain of extinct volcanoes is often found extending from a hot spot . | why might geologists still consider mount jefferson to be an active volcano ? |
some mountains are made of solid rock , like the rocky mountains or the swiss alps . but , some mountains are actually volcanoes . volcanoes are vents , or openings in the earth 's crust , that release ash , gases and steam , and hot liquid rock called lava . when the lava cools and hardens , it forms into the cone‐sha... | some mountains are made of solid rock , like the rocky mountains or the swiss alps . but , some mountains are actually volcanoes . volcanoes are vents , or openings in the earth 's crust , that release ash , gases and steam , and hot liquid rock called lava . | why do we have volcanoes for ? |
some mountains are made of solid rock , like the rocky mountains or the swiss alps . but , some mountains are actually volcanoes . volcanoes are vents , or openings in the earth 's crust , that release ash , gases and steam , and hot liquid rock called lava . when the lava cools and hardens , it forms into the cone‐sha... | the melted rock , or magma , is lighter than the surrounding rock and rises up . this magma collects in magma chambers , but it is still miles below the surface . when enough magma builds up in the magma chamber , it forces its way up to the surface and erupts , often causing volcanic eruptions . in the ocean , volcano... | how does the magma have enough force to break the crust and shoot 3-4 metres up in the air ? |
some mountains are made of solid rock , like the rocky mountains or the swiss alps . but , some mountains are actually volcanoes . volcanoes are vents , or openings in the earth 's crust , that release ash , gases and steam , and hot liquid rock called lava . when the lava cools and hardens , it forms into the cone‐sha... | while the hot spot stays in one place , rooted to its deep source of heat , the tectonic plate is slowly moving above it . as the plate moves , so does the volcano , and another one forms in its place . the volcano that moved is no longer active . this is why a chain of extinct volcanoes is often found extending from a... | how do geologists know if a volcano is dormant ? |
some mountains are made of solid rock , like the rocky mountains or the swiss alps . but , some mountains are actually volcanoes . volcanoes are vents , or openings in the earth 's crust , that release ash , gases and steam , and hot liquid rock called lava . when the lava cools and hardens , it forms into the cone‐sha... | when this happens , the ocean plate sinks into the mantle . water trapped in the rocks in this plate gets squeezed out . this causes some of the rocks to melt . | in paragraph 4 , how does the water get trapped in the rocks in the first place and from where is it released ? |
overview john adams , a federalist , was the second president of the united states . he served from 1797-1801 . john adams 's presidency was marked by conflicts between the two newly-formed political parties : the federalists and the democratic-republicans . the conflicts between the two political parties centered on f... | these `` midnight judges '' were a ploy to stack the courts against the incoming democratic-republican party . although adams signed the judicial appointments , he failed to make sure they were delivered on time . when jefferson took office , he refused to arrange for the delivery of the remaining appointments . | how long were presidencies at this time ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | absorption and emission bohr could now precisely describe the processes of absorption and emission in terms of electronic structure . according to bohr 's model , an electron would absorb energy in the form of photons to get excited to a higher energy level as long as the photon 's energy was equal to the energy differ... | what is the reason for not radiating or absorbing energy ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | actually , i have heard that neutrons and protons are made up of quarks ( 6 kinds ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | the energy levels and transitions between them can be illustrated using an energy level diagram , such as the example above showing electrons relaxing back to the $ n=2 $ level of hydrogen . the energy of the emitted photon is equal to the difference in energy between the two energy levels for a particular transition .... | what is the relationship between energy of light emitted and the periodic table ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | since an electron in orbit around the nucleus is more stable than an electron that is infinitely far away from its nucleus , the energy of an electron in orbit is always negative . absorption and emission bohr could now precisely describe the processes of absorption and emission in terms of electronic structure . accor... | i was wondering , in the image representing the emission spectrum of sodium and the emission spectrum of the sun , how does this show that there is sodium in the sun 's atmosphere ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | prior to bohr 's model of the hydrogen atom , scientists were unclear of the reason behind the quantization of atomic emission spectra . bohr 's model of the hydrogen atom : quantization of electronic structure bohr ’ s model of the hydrogen atom started from the planetary model , but he added one assumption regarding ... | why does'nt the bohr 's atomic model work for those atoms that have more than one electron ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | as long as your piano is properly tuned , you can play an f or f sharp , but you ca n't play the note that is halfway between an f and f sharp . atomic line spectra atomic line spectra are another example of quantization . when an element or ion is heated by a flame or excited by electric current , the excited atoms em... | how is atomic photon emission detected ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | prior to bohr 's model of the hydrogen atom , scientists were unclear of the reason behind the quantization of atomic emission spectra . bohr 's model of the hydrogen atom : quantization of electronic structure bohr ’ s model of the hydrogen atom started from the planetary model , but he added one assumption regarding ... | also , how did bohr apply the concept of quantum energy in his model of the atom ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | this means that it is not possible to know both a given electron ’ s position in space and its velocity at the same time , a concept that is more precisely stated in heisenberg 's uncertainty principle . the uncertainty principle contradicts bohr ’ s idea of electrons existing in specific orbits with a known velocity a... | what is the principle that defines plank 's constant ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | the uncertainty principle contradicts bohr ’ s idea of electrons existing in specific orbits with a known velocity and radius . instead , we can only calculate probabilities of finding electrons in a particular region of space around the nucleus . the modern quantum mechanical model may sound like a huge leap from the ... | what exactly is this `` empty space '' ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | one of the founders of this field was danish physicist niels bohr , who was interested in explaining the discrete line spectrum observed when light was emitted by different elements . bohr was also interested in the structure of the atom , which was a topic of much debate at the time . numerous models of the atom had b... | how much size of an atom ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | according to bohr 's model , an electron would absorb energy in the form of photons to get excited to a higher energy level as long as the photon 's energy was equal to the energy difference between the initial and final energy levels . after jumping to the higher energy level—also called the excited state—the excited ... | why does the electron only fall down to the 2nd level when the 1st level is a lower configuration ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | according to bohr 's model , an electron would absorb energy in the form of photons to get excited to a higher energy level as long as the photon 's energy was equal to the energy difference between the initial and final energy levels . after jumping to the higher energy level—also called the excited state—the excited ... | i know when it falls down to the 1st level is called the lyman series , and why should there be any other hydrogen spectrum other than the lyman series ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | absorption and emission bohr could now precisely describe the processes of absorption and emission in terms of electronic structure . according to bohr 's model , an electron would absorb energy in the form of photons to get excited to a higher energy level as long as the photon 's energy was equal to the energy differ... | according to bohr also , electrons that are negatively charged revolve around the nucleus which is positively charged.so according to maxwell they must also release energy and their orbit should shrink but the energy level of orbit is fixed.why it is so ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | this means that it is not possible to know both a given electron ’ s position in space and its velocity at the same time , a concept that is more precisely stated in heisenberg 's uncertainty principle . the uncertainty principle contradicts bohr ’ s idea of electrons existing in specific orbits with a known velocity a... | why can the square of the wave function be used to describe the probability density of finding electrons , as opposed to being able to absolutely determine where electrons are located in an atom ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | absorption and emission bohr could now precisely describe the processes of absorption and emission in terms of electronic structure . according to bohr 's model , an electron would absorb energy in the form of photons to get excited to a higher energy level as long as the photon 's energy was equal to the energy differ... | suppose a electron is excited to 5th energy level will it come directly to ground level or in numbers of steps ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | absorption and emission bohr could now precisely describe the processes of absorption and emission in terms of electronic structure . according to bohr 's model , an electron would absorb energy in the form of photons to get excited to a higher energy level as long as the photon 's energy was equal to the energy differ... | the energy required to excite an electron , is it an ionizing radiation ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | this is because the energy of an electron in orbit is relative to the energy of an electron that has been completely separated from its nucleus , $ n=\infty $ , which is defined to have an energy of $ 0\ , \text { ev } $ . since an electron in orbit around the nucleus is more stable than an electron that is infinitely ... | why the energy of an electron is always negative ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | he found that $ r ( 1 ) $ has the value $ \text { bohr radius } =r ( 1 ) =0.529 \times 10^ { -10 } \ , \text { m } $ by keeping the electrons in circular , quantized orbits around the positively-charged nucleus , bohr was able to calculate the energy of an electron in the $ n $ th energy level of hydrogen : $ e ( n ) =... | did the negative sign convey that that much of energy is required or that much is realised ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | the energy levels and transitions between them can be illustrated using an energy level diagram , such as the example above showing electrons relaxing back to the $ n=2 $ level of hydrogen . the energy of the emitted photon is equal to the difference in energy between the two energy levels for a particular transition .... | what is the difference between a photon and quantum ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | only shells with a radius given by the equation below would be allowed , and the electron could not exist in between these shells . mathematically , we could write the allowed values of the atomic radius as $ r ( n ) =n^2\cdot r ( 1 ) $ , where $ n $ is a positive integer , and $ r ( 1 ) $ is the bohr radius , the smal... | what does `` n '' mean in this formula ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | when an element or ion is heated by a flame or excited by electric current , the excited atoms emit light of a characteristic color . the emitted light can be refracted by a prism , producing spectra with a distinctive striped appearance due to the emission of certain wavelengths of light . for the relatively simple ca... | is the the number of photons in the beam of light ? |
key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | key points bohr 's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells , or orbits , around the nucleus . bohr 's model calculated the following energies for an electron in the shell , $ n $ : $ e ( n ) =-\dfrac { 1 } { n^2 } \cdot 13.6\ , \text { ev } $ bohr explained the... | what does the unit ev stand for ? |
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