The two naturally occurring isotopes of chlorine (chemical symbol: Cl) are: 3517Cl1735Cl  and 3717Cl1737Cl    The atomic mass of chlorine is 35.5 amu. What are the abundances of the two isotopes of chlorine? Note: If you just write down the abundances without showing your work, you will not get full credit for this problem Hint: The two equations you need to solve are: ?35+?37=1F35+F37=1  ?35?35+?37?37=atomic_mass_of_chlorine=35.5F35M35+F37M37=atomic_mass_of_chlorine=35.5   where F35 and F37 are the fractional abundances you are trying to find and M35 and M37 are the mass numbers of the two isotopes.

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter2: Chemical Compounds
Section: Chapter Questions
Problem 29QRT: Argon has three naturally occurring isotopes: 0.3336% 36Ar, 0.063% 38Ar, and 99.60% 40Ar. Estimate...
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The two naturally occurring isotopes of chlorine (chemical symbol: Cl) are: 3517Cl1735Cl  and 3717Cl1737Cl 

 

The atomic mass of chlorine is 35.5 amu.

What are the abundances of the two isotopes of chlorine?

Note: If you just write down the abundances without showing your work, you will not get full credit for this problem

Hint: The two equations you need to solve are:

?35+?37=1F35+F37=1 

?35?35+?37?37=atomic_mass_of_chlorine=35.5F35M35+F37M37=atomic_mass_of_chlorine=35.5  

where F35 and F37 are the fractional abundances you are trying to find and M35 and M37 are the mass numbers of the two isotopes.

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