Answer
127.0541 amu
Work Step by Step
Compute the fractional abundance for each isotope.
Use a weighted average to compute the apparent atomic mass of the sample.
(0.925241)(126.9045 amu)+(0.0747594)(128.9050 amu) = 127.0541 amu
Chemistry: Molecular Approach (4th Edition)
by Tro, Nivaldo J.
Published by
Pearson
ISBN 10:
0134112830
ISBN 13:
978-0-13411-283-1
Chapter 2 - Exercises - Page 81: 100
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