How to calculate the relative abundance of each isotope of chlorine?
Q. Chlorine exists as two isotopes, Cl-35 and Cl-36. How do you calculate the relative abundance of each isotope? No need to do the calculations, just an explanation would be great. Thanks!
Asked by GuitarHeroGirl - Mon Apr 13 16:34:38 2009 - - 1 Answers - 0 Comments
A. Visit these sites to learn more about chemistry formulas and concepts that can help you in regards to your problem:
Answered by Bawan - Fri Apr 17 16:43:07 2009
Q. Chlorine exists as two isotopes, Cl-35 and Cl-36. How do you calculate the relative abundance of each isotope? No need to do the calculations, just an explanation would be great. Thanks!
Asked by GuitarHeroGirl - Mon Apr 13 16:34:38 2009 - - 1 Answers - 0 Comments
A. Visit these sites to learn more about chemistry formulas and concepts that can help you in regards to your problem:
Answered by Bawan - Fri Apr 17 16:43:07 2009
What is the relative abundance of the lighter isotope?
Q. the bigger part: if the mass of the only 2 isotopes of an element are 126.6331u and 129.1386u and the weighted average mass is 127.3321u , what is the relative abundance of the lighter isotope? please, i need the answer tonight! please help me. i'm really confused. Thank You So Much.
Asked by Marielle - Wed Aug 5 01:32:30 2009 - - 1 Answers - 0 Comments
A. Hi Marielle: Let x be the fraction of the lighter isotope then 126.6331x is the contribution the light isotope makes to the overall atomic weight. The remaining fraction (1-x) therefore contributes 129.1386(1-x) to the atomic weight which we are given = 127.3321 So 126.6331x + 129.1386(1-x) = 127.3371 From which x = 1.8065/2.5055 = 0.721014 or 72.1014% (we're 1 sig short but ...) cheers, drp
Answered by sjbiis - Wed Aug 5 01:47:03 2009
Q. the bigger part: if the mass of the only 2 isotopes of an element are 126.6331u and 129.1386u and the weighted average mass is 127.3321u , what is the relative abundance of the lighter isotope? please, i need the answer tonight! please help me. i'm really confused. Thank You So Much.
Asked by Marielle - Wed Aug 5 01:32:30 2009 - - 1 Answers - 0 Comments
A. Hi Marielle: Let x be the fraction of the lighter isotope then 126.6331x is the contribution the light isotope makes to the overall atomic weight. The remaining fraction (1-x) therefore contributes 129.1386(1-x) to the atomic weight which we are given = 127.3321 So 126.6331x + 129.1386(1-x) = 127.3371 From which x = 1.8065/2.5055 = 0.721014 or 72.1014% (we're 1 sig short but ...) cheers, drp
Answered by sjbiis - Wed Aug 5 01:47:03 2009
How to calculate relative abundance of 3 or more isotopes?
Q. Naturally occurring silicon is a mixture of three isotopes, 28Si, 29Si and 30Si. The relative atomic mass of silicon is 28.109. What could be the relative abundance of each of the three isotopes?
Asked by monkey - Mon Jun 29 11:05:12 2009 - - 1 Answers - 0 Comments
Q. Naturally occurring silicon is a mixture of three isotopes, 28Si, 29Si and 30Si. The relative atomic mass of silicon is 28.109. What could be the relative abundance of each of the three isotopes?
Asked by monkey - Mon Jun 29 11:05:12 2009 - - 1 Answers - 0 Comments
How do you find percent abundance of a given isotope?
Q. The element gallium has two natural occurring isotopes with masses of 68.93 amu and 70.92 amu. What would be the percent abundance of the first isotope, if the atomic weight were 69.7070 amu?
Asked by Mike - Mon May 25 18:35:42 2009 - - 1 Answers - 0 Comments
A. There is approximately 61% of the first isotope and 39% of the second. I just did trial and error by plugging in random numbers, well first .5 and .5 to the following equation. 68.93 * x + 70.92 * y = 69.70
Answered by Frankie - Mon May 25 18:51:36 2009
Q. The element gallium has two natural occurring isotopes with masses of 68.93 amu and 70.92 amu. What would be the percent abundance of the first isotope, if the atomic weight were 69.7070 amu?
Asked by Mike - Mon May 25 18:35:42 2009 - - 1 Answers - 0 Comments
A. There is approximately 61% of the first isotope and 39% of the second. I just did trial and error by plugging in random numbers, well first .5 and .5 to the following equation. 68.93 * x + 70.92 * y = 69.70
Answered by Frankie - Mon May 25 18:51:36 2009
How do you work out the percentage abundance in an isotope?
Q. I have the relative atomic mass of the element, i just need to know how do you work out the abundance. there is two isotopes.
Asked by kim442271 - Sun Sep 7 09:32:04 2008 - - 1 Answers - 1 Comments
A. Let x = % abundance of the 1st isotope let y = % abundance of the 2nd isotope x + y = 100 x = 100-y atomic weight = atomic weight 1st isotope ( 100-y) + atomic weight 2nd isotope y / 100
Answered by Dr.A - Sun Sep 7 11:08:09 2008
Q. I have the relative atomic mass of the element, i just need to know how do you work out the abundance. there is two isotopes.
Asked by kim442271 - Sun Sep 7 09:32:04 2008 - - 1 Answers - 1 Comments
A. Let x = % abundance of the 1st isotope let y = % abundance of the 2nd isotope x + y = 100 x = 100-y atomic weight = atomic weight 1st isotope ( 100-y) + atomic weight 2nd isotope y / 100
Answered by Dr.A - Sun Sep 7 11:08:09 2008
What factors make nitrogen gas the most abundance in earth atmosphere?
Q. Originally,Earth's atmosphere composition was not like today's.It is believed that the atmosphere started with methane as the most abundant.Later, the existence of ancient algae and other microorganisms made the atmosphere full of O2 until O2 was considered toxic then.The situation changed when the aerobic organisms evolved to reduce O2 composition to 21% of atmosphere. However,I can't find theory that account for nitrogen gas 78% abundance in atmosphere. In other words,compare to Venus and Mars,why earth can have nitrogen up to 78% of her atmosphere?
Asked by Laughing - Wed Apr 9 07:38:48 2008 - - 2 Answers - 0 Comments
A. Nitrogen is left because it doesn't react with anything. The methane and CO2 have all been disposed of by plants and bacteria. Only a small amount of nitrogen is removed by electric storms and nitrogen fixing bacteria.
Answered by Peter K - Wed Apr 9 07:43:24 2008
Q. Originally,Earth's atmosphere composition was not like today's.It is believed that the atmosphere started with methane as the most abundant.Later, the existence of ancient algae and other microorganisms made the atmosphere full of O2 until O2 was considered toxic then.The situation changed when the aerobic organisms evolved to reduce O2 composition to 21% of atmosphere. However,I can't find theory that account for nitrogen gas 78% abundance in atmosphere. In other words,compare to Venus and Mars,why earth can have nitrogen up to 78% of her atmosphere?
Asked by Laughing - Wed Apr 9 07:38:48 2008 - - 2 Answers - 0 Comments
A. Nitrogen is left because it doesn't react with anything. The methane and CO2 have all been disposed of by plants and bacteria. Only a small amount of nitrogen is removed by electric storms and nitrogen fixing bacteria.
Answered by Peter K - Wed Apr 9 07:43:24 2008
What is the abundance of gold and how much is gold an ounce and who discover it and when?
Q. wow a long question! Please help!What is the abundance of gold and how much is gold an ounce and who discover it and when?
Asked by jabbajul - Sun Oct 18 21:21:43 2009 - - 2 Answers - 0 Comments
A. All of the mined gold would be equal to about 1/3 of the Washington monument. The price of gold changes every day. People were using gold before 3000 bc. They picked it up in river beds.
Answered by readupmore. - Sun Oct 18 22:49:07 2009
Q. wow a long question! Please help!What is the abundance of gold and how much is gold an ounce and who discover it and when?
Asked by jabbajul - Sun Oct 18 21:21:43 2009 - - 2 Answers - 0 Comments
A. All of the mined gold would be equal to about 1/3 of the Washington monument. The price of gold changes every day. People were using gold before 3000 bc. They picked it up in river beds.
Answered by readupmore. - Sun Oct 18 22:49:07 2009
How do you calculate the number of neutrons given the isotope mass and relative abundance?
Q. Isotope Mass one: 40 Relative Abundances one: 11% Isotope Mass two: 42 Relative Abundances two: 86% Isotope Mass three: 44 Relative Abundance three: 3% ;l I know these are pretty easy questions, but I have no idea how to do them! What is the isotope mass? And relative abundance? D: Please help..
Asked by FeelsLiikeWeBelongTogether.. - Thu Feb 5 20:44:35 2009 - - 1 Answers - 0 Comments
A. solve ur self..i will give u the example Naturally occurring silver contains isotopes of mass numbers 107 and 109, with percentage abundances of 51 and 49 respectively. Calculate the relative atomic mass of silver. Answer: Ar(Ag) = [(51 x 107) + (49 x 109)] / 100 = [5457 + 5341] / 100 = 10798 / 100 = 107.98
Answered by Vicccky Kapuur - Thu Feb 5 22:42:12 2009
Q. Isotope Mass one: 40 Relative Abundances one: 11% Isotope Mass two: 42 Relative Abundances two: 86% Isotope Mass three: 44 Relative Abundance three: 3% ;l I know these are pretty easy questions, but I have no idea how to do them! What is the isotope mass? And relative abundance? D: Please help..
Asked by FeelsLiikeWeBelongTogether.. - Thu Feb 5 20:44:35 2009 - - 1 Answers - 0 Comments
A. solve ur self..i will give u the example Naturally occurring silver contains isotopes of mass numbers 107 and 109, with percentage abundances of 51 and 49 respectively. Calculate the relative atomic mass of silver. Answer: Ar(Ag) = [(51 x 107) + (49 x 109)] / 100 = [5457 + 5341] / 100 = 10798 / 100 = 107.98
Answered by Vicccky Kapuur - Thu Feb 5 22:42:12 2009
How do you find out the fractional abundance of an isotope?
Q. For instance: Chlorine has two naturally occurring isotopes, chlorine-35 (isotopic mass 34.9689 amu) and chlorine-37 (isotopic mass 36.9659 amu). If chlorine has an atomic mass of 35.4527 amu, what is the percent abundance of each isotope? How would I work this problem?
Asked by flyercam2 - Mon Aug 21 21:39:51 2006 - - 1 Answers - 2 Comments
A. To find the percent abundance of each isotope of chlorine proceed as follows: Let x = fraction of Cl-35 then fraction of Cl-37 must be 1-x so 34.9689x + (36.9659)(1-x) = 35.4527 and solve for x. I hope this helps.
Answered by Auriga - Mon Aug 21 21:50:22 2006
Q. For instance: Chlorine has two naturally occurring isotopes, chlorine-35 (isotopic mass 34.9689 amu) and chlorine-37 (isotopic mass 36.9659 amu). If chlorine has an atomic mass of 35.4527 amu, what is the percent abundance of each isotope? How would I work this problem?
Asked by flyercam2 - Mon Aug 21 21:39:51 2006 - - 1 Answers - 2 Comments
A. To find the percent abundance of each isotope of chlorine proceed as follows: Let x = fraction of Cl-35 then fraction of Cl-37 must be 1-x so 34.9689x + (36.9659)(1-x) = 35.4527 and solve for x. I hope this helps.
Answered by Auriga - Mon Aug 21 21:50:22 2006
How do you work out the Relative Abundance of an atom?
Q. Here is the question: A carbon sample is found to contain two isotopes with relative isotopic masses of 12.00 and 13.00. If the relative atomic mass is 12.01 find the relative abundance. I know how to find the relative abundance but theres two unknown values so how do I do it???
Asked by Jay - Sat Feb 13 18:28:09 2010 - - 1 Answers - 0 Comments
A. Sounds like a really easy problem actually. x * 12.00 + y * 13.00 = (x+y) * 12.01 = x * 12.01 + y * 12.01 y * 0.99 = x * 0.01 y * 99 = x so that would mean 99 parts with isotope Carbon-12, and 1 part with isotope Carbon-13.
Answered by Texas - Sat Feb 13 18:35:59 2010
Q. Here is the question: A carbon sample is found to contain two isotopes with relative isotopic masses of 12.00 and 13.00. If the relative atomic mass is 12.01 find the relative abundance. I know how to find the relative abundance but theres two unknown values so how do I do it???
Asked by Jay - Sat Feb 13 18:28:09 2010 - - 1 Answers - 0 Comments
A. Sounds like a really easy problem actually. x * 12.00 + y * 13.00 = (x+y) * 12.01 = x * 12.01 + y * 12.01 y * 0.99 = x * 0.01 y * 99 = x so that would mean 99 parts with isotope Carbon-12, and 1 part with isotope Carbon-13.
Answered by Texas - Sat Feb 13 18:35:59 2010
What is the difference between speaking form out of the abundance of the heart, before you are born again?
Q. What should be the abundance of my heart be now, being born again born of the Spirit and in Christ, sinfulness or righteousness? Do i see the natural man who was made a sinner through Adam's disobedience or do i see a man who was created in Christ created in righteousness, and true holiness? Don't say anything of what You are trying to do through your faith, but share what God said He has done through the faith of Christ in you.
Asked by edwah zephaniah - Fri Oct 2 16:17:54 2009 - - 4 Answers - 0 Comments
A. Dear Ed. Zeph., good afternoon! Since English is not my native language, I did not get very well your question but it raised my interest. As a born again person, filled with the Spirit of God, the abundance of my heart should be righteousness: "that we should serve in newness of spirit"... (1) But, as the apostle Paul wrote: "For the good that I would I do not: but the evil which I would not, that I do." (2) There is a war inside of me, but as I struggle, with my eyes focused in Christ, I'm sure that with His help, with His faith in me I'll continue walking towards Him, resembling Him (just a little, tiny bit) more and more each day. "All that the Father giveth me shall come to me; and him that cometh to me I will in no wise cast… [cont.]
Answered by Vovo (Grandma) - Fri Oct 2 16:56:18 2009
Q. What should be the abundance of my heart be now, being born again born of the Spirit and in Christ, sinfulness or righteousness? Do i see the natural man who was made a sinner through Adam's disobedience or do i see a man who was created in Christ created in righteousness, and true holiness? Don't say anything of what You are trying to do through your faith, but share what God said He has done through the faith of Christ in you.
Asked by edwah zephaniah - Fri Oct 2 16:17:54 2009 - - 4 Answers - 0 Comments
A. Dear Ed. Zeph., good afternoon! Since English is not my native language, I did not get very well your question but it raised my interest. As a born again person, filled with the Spirit of God, the abundance of my heart should be righteousness: "that we should serve in newness of spirit"... (1) But, as the apostle Paul wrote: "For the good that I would I do not: but the evil which I would not, that I do." (2) There is a war inside of me, but as I struggle, with my eyes focused in Christ, I'm sure that with His help, with His faith in me I'll continue walking towards Him, resembling Him (just a little, tiny bit) more and more each day. "All that the Father giveth me shall come to me; and him that cometh to me I will in no wise cast… [cont.]
Answered by Vovo (Grandma) - Fri Oct 2 16:56:18 2009
how to calculate the percent abundance of isotopes?
Q. in particular: copper is listed on the periodic table as having a relative atomic mass of 63.55. Reference books indicate two isotopes of copper, with relative masses of 62.93 and 64.93. Find the percent abundance of each isotope.
Asked by Jade - Mon Nov 2 16:39:55 2009 - - 1 Answers - 0 Comments
A. If x is the fraction of 63-Cu, then (1-x) is the fraction of 65-Cu. There are two isotopes and their total abundance must be 1. Then 63.55 = 62.93x +(1-x)64.93 = 62.93x + 64.93 - 64.93x = 64.93 - 2x 2x = 64.93 - 63.55 = 1.38 so x = 0.69 63-Cu is 69% and 65-Cu is 31%
Answered by James - Mon Nov 2 16:48:32 2009
Q. in particular: copper is listed on the periodic table as having a relative atomic mass of 63.55. Reference books indicate two isotopes of copper, with relative masses of 62.93 and 64.93. Find the percent abundance of each isotope.
Asked by Jade - Mon Nov 2 16:39:55 2009 - - 1 Answers - 0 Comments
A. If x is the fraction of 63-Cu, then (1-x) is the fraction of 65-Cu. There are two isotopes and their total abundance must be 1. Then 63.55 = 62.93x +(1-x)64.93 = 62.93x + 64.93 - 64.93x = 64.93 - 2x 2x = 64.93 - 63.55 = 1.38 so x = 0.69 63-Cu is 69% and 65-Cu is 31%
Answered by James - Mon Nov 2 16:48:32 2009
How do you find the percent abundance when given the atomic mass?
Q. Specifically in the following problem: The element Boron exists as B-10 and B-11. The atomic mass of B-10 is 10.001 amu and the atomic mass of B-11 is 10.998 amu. If the average atomic mass of a mixed sample is given as 10.81 amu, what is the percent abundance of each isotope? I understand that the equation would be x+y=1, which would be 10.001x+10.998y=10.81 but I'm not sure how to continue. Many thanks!
Asked by FutureDoctor - Wed Oct 7 22:28:36 2009 - - 1 Answers - 0 Comments
A. You need one more piece of information, one of the percentages.
Answered by darkwater d - Wed Oct 7 22:35:28 2009
Q. Specifically in the following problem: The element Boron exists as B-10 and B-11. The atomic mass of B-10 is 10.001 amu and the atomic mass of B-11 is 10.998 amu. If the average atomic mass of a mixed sample is given as 10.81 amu, what is the percent abundance of each isotope? I understand that the equation would be x+y=1, which would be 10.001x+10.998y=10.81 but I'm not sure how to continue. Many thanks!
Asked by FutureDoctor - Wed Oct 7 22:28:36 2009 - - 1 Answers - 0 Comments
A. You need one more piece of information, one of the percentages.
Answered by darkwater d - Wed Oct 7 22:35:28 2009
What is the abundance of Flint in existence?
Q. What is the abundance of Flint in existence? In other words, how much flint is there on this Earth? How would you classify flint? Is it common, uncommon, rare?
Asked by Wolf Mike - Tue Jan 8 21:20:06 2008 - - 1 Answers - 0 Comments
A. world wide it is pretty common, however there is really no telling exactly how much the Earth holds. this site explains how common it is in Kansas. you find flint in some limestone. pretty common.
Answered by Pennsylvania - Sat Jan 12 00:53:32 2008
Q. What is the abundance of Flint in existence? In other words, how much flint is there on this Earth? How would you classify flint? Is it common, uncommon, rare?
Asked by Wolf Mike - Tue Jan 8 21:20:06 2008 - - 1 Answers - 0 Comments
A. world wide it is pretty common, however there is really no telling exactly how much the Earth holds. this site explains how common it is in Kansas. you find flint in some limestone. pretty common.
Answered by Pennsylvania - Sat Jan 12 00:53:32 2008
What is the percent abundance for Iodine in the earth and the universe? Where is location of high abundance?
Q. I need to know the percent abundance for iodine in the earth and the universe, and also the location of high abundance for iodine. Please help me
Asked by Tennisman - Sat Oct 6 13:30:30 2007 - - 1 Answers - 0 Comments
A. This page has all the answers: It says: Abundance ppb by weight ppb by atoms Universe 1 0.01 Meteorites 260 30 Crustal rocks 490 80 Sea water 60 2.9 Humans 200 10 Iodine is never found in nature as the free element. Iodine minerals are very rare. Brines often contain a little iodide. Chilean nitrate deposits contain up to 0.3% calcium iodate. Some iodine is also extracted from seaweed.
Answered by ronwizfr - Sun Oct 7 02:48:41 2007
Q. I need to know the percent abundance for iodine in the earth and the universe, and also the location of high abundance for iodine. Please help me
Asked by Tennisman - Sat Oct 6 13:30:30 2007 - - 1 Answers - 0 Comments
A. This page has all the answers: It says: Abundance ppb by weight ppb by atoms Universe 1 0.01 Meteorites 260 30 Crustal rocks 490 80 Sea water 60 2.9 Humans 200 10 Iodine is never found in nature as the free element. Iodine minerals are very rare. Brines often contain a little iodide. Chilean nitrate deposits contain up to 0.3% calcium iodate. Some iodine is also extracted from seaweed.
Answered by ronwizfr - Sun Oct 7 02:48:41 2007
What is the natural abundance of pnicogens (poison metals in the periodic table, group/family 15)?
Q. What is the natural abundance of the following elements in their natural state? Nitrogen Phosphorous Arsenic Antimony Bismuth Also, what is the trend of reactivity (if possible, you don't have to answer this)
Asked by Stephen - Wed Oct 22 20:42:21 2008 - - 1 Answers - 0 Comments
A. N: 99.6999% as 14N, 0.366% as 15N P: 100% as 31P As: 100% as 75As Sb: 57.36% as 121Sb, 42.64% as 123Sb Bi: 100% as 209Bi Based on periodic trends, the reactivity of N should be highest and that of Bi the lowest (based on ionization energy and electronegativity). All the pnicogens bond quite tightly to other elements (they make good double and triple covalent bonds).
Answered by flan318 - Wed Oct 22 21:10:40 2008
Q. What is the natural abundance of the following elements in their natural state? Nitrogen Phosphorous Arsenic Antimony Bismuth Also, what is the trend of reactivity (if possible, you don't have to answer this)
Asked by Stephen - Wed Oct 22 20:42:21 2008 - - 1 Answers - 0 Comments
A. N: 99.6999% as 14N, 0.366% as 15N P: 100% as 31P As: 100% as 75As Sb: 57.36% as 121Sb, 42.64% as 123Sb Bi: 100% as 209Bi Based on periodic trends, the reactivity of N should be highest and that of Bi the lowest (based on ionization energy and electronegativity). All the pnicogens bond quite tightly to other elements (they make good double and triple covalent bonds).
Answered by flan318 - Wed Oct 22 21:10:40 2008
For Feng Shui, what have you put in your abundance corner of your home or work place?
Q. I would like to know what you put in your abundance corner of your home, that works. Where do you come from? Thankyou
Asked by PJJ - Fri Jan 25 06:08:45 2008 - - 2 Answers - 0 Comments
A. I think the most important thing is to clear the clutter in the abundance section. Well, all over, actually. Flowers are good. A healthy house plant is good, if the light is right. A treasure chest might be nice. I don't know how much of Feng Shui works because of chi movement -- but I think a lot of Feng Shui works because it makes you think about what's important in your life. So choose something meaningful to you -- that's the most powerful symbol! If it's living, take care of it. If it is inanimate, dust it, and maybe move it or change it on a regular basis. That will keep your purpose fresh in your mind. I live in Japan, but most of my feng shui is from Western books. I like Karen Kingston's Clear Your Clutter with Feng Shui book… [cont.]
Answered by Madame M - Fri Jan 25 08:35:32 2008
Q. I would like to know what you put in your abundance corner of your home, that works. Where do you come from? Thankyou
Asked by PJJ - Fri Jan 25 06:08:45 2008 - - 2 Answers - 0 Comments
A. I think the most important thing is to clear the clutter in the abundance section. Well, all over, actually. Flowers are good. A healthy house plant is good, if the light is right. A treasure chest might be nice. I don't know how much of Feng Shui works because of chi movement -- but I think a lot of Feng Shui works because it makes you think about what's important in your life. So choose something meaningful to you -- that's the most powerful symbol! If it's living, take care of it. If it is inanimate, dust it, and maybe move it or change it on a regular basis. That will keep your purpose fresh in your mind. I live in Japan, but most of my feng shui is from Western books. I like Karen Kingston's Clear Your Clutter with Feng Shui book… [cont.]
Answered by Madame M - Fri Jan 25 08:35:32 2008
What does abundance mean in relation to science?
Q. My teacher keeps using the word abundance in a lot of her questions but it doesn't seem to make sense. For example "Does the percentage by which the abundance of parent atoms changes during each trial approximately correspond to predicted by theory??" This question makes no sense to me!
Asked by Momin2005 - Thu Jan 25 16:23:02 2007 - - 2 Answers - 0 Comments
A. Its the relative quantity available. That is how much of it can you find as compared to other quantities.
Answered by goring - Thu Jan 25 16:36:28 2007
Q. My teacher keeps using the word abundance in a lot of her questions but it doesn't seem to make sense. For example "Does the percentage by which the abundance of parent atoms changes during each trial approximately correspond to predicted by theory??" This question makes no sense to me!
Asked by Momin2005 - Thu Jan 25 16:23:02 2007 - - 2 Answers - 0 Comments
A. Its the relative quantity available. That is how much of it can you find as compared to other quantities.
Answered by goring - Thu Jan 25 16:36:28 2007
How to calculate the abundance of strontium isotopes?
Q. Calculate the abundance of the isotopes and the atomic weight or Sr given that (Sr-87)/(Sr-86) = 2.5, (Sr-86)/(Sr-88) = 0.1194, (Sr-84)/(Sr-86) = 0.056584. The masses of the isotopes are Sr-88 = 87.9056 amu, Sr-87 = 86.9088 amu, Sr-86 = 85.9092 amu, and Sr-84 = 83.9134 amu.
Asked by Luke - Sun Oct 18 20:00:27 2009 - - 1 Answers - 0 Comments
Q. Calculate the abundance of the isotopes and the atomic weight or Sr given that (Sr-87)/(Sr-86) = 2.5, (Sr-86)/(Sr-88) = 0.1194, (Sr-84)/(Sr-86) = 0.056584. The masses of the isotopes are Sr-88 = 87.9056 amu, Sr-87 = 86.9088 amu, Sr-86 = 85.9092 amu, and Sr-84 = 83.9134 amu.
Asked by Luke - Sun Oct 18 20:00:27 2009 - - 1 Answers - 0 Comments
How to find the relative abundance of isotopes??
Q. 10.81=x(10.01294) + x(11.00931) In this question I have to find the relative abundance of Boron's two isotopes 10 and 11, so how to find the X? 10.81 is the average atomic mass of Boron. Thank you!!
Asked by Sofiee - Sun Aug 24 07:50:55 2008 - - 1 Answers - 0 Comments
A. Hello, You are close to having the right equation but not quite. If the total amount of boron is 1 And the fraction which is Boron 10 is X Then the fraction of Boron 11 is (1 - X) 10.81 = x ( 10.01294) + (1-x ) * 11.00931 solving for x x = .2000 or 20.00% remember significant figures. Hope this helps you.
Answered by neillup - Sun Aug 24 08:39:30 2008
Q. 10.81=x(10.01294) + x(11.00931) In this question I have to find the relative abundance of Boron's two isotopes 10 and 11, so how to find the X? 10.81 is the average atomic mass of Boron. Thank you!!
Asked by Sofiee - Sun Aug 24 07:50:55 2008 - - 1 Answers - 0 Comments
A. Hello, You are close to having the right equation but not quite. If the total amount of boron is 1 And the fraction which is Boron 10 is X Then the fraction of Boron 11 is (1 - X) 10.81 = x ( 10.01294) + (1-x ) * 11.00931 solving for x x = .2000 or 20.00% remember significant figures. Hope this helps you.
Answered by neillup - Sun Aug 24 08:39:30 2008
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