Chemistry and Chemical Reactivity (9th Edition)

Published by Cengage Learning
ISBN 10: 1133949649
ISBN 13: 978-1-13394-964-0

Chapter 2 Atoms, Molecules, and Ions - 2-5 The Periodic Table - Case Study - Questions: 2

Answer

$15.9993 u $

Work Step by Step

The molar mass is given by the weighted average of the masses of the isotopes, weighted by their abundances. $15.9949\times0.99763+16.9991\times0.000375+17.9991\times0.001995 = 15.9993 u $
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