Chemistry: The Molecular Science (5th Edition)

Published by Cengage Learning
ISBN 10: 1285199049
ISBN 13: 978-1-28519-904-7

Chapter 2 - Chemical Compounds - Conceptual Exercise 2.5 - Percent Abundance - Page 55: a

Answer

Li-6 = 6.015121 x 7.5/100 = 0.451 Li-7 = 7.016003 x 92.5/100 = 6.4898 Avg atomic mass = 0.421 + 6.4898 = 6.941 Avg atomic mass given in periodic table is also 6.94

Work Step by Step

Li-6 = 6.015121 x 7.5/100 = 0.451 Li-7 = 7.016003 x 92.5/100 = 6.4898 Avg atomic mass = 0.421 + 6.4898 = 6.941 Avg atomic mass given in periodic table is also 6.94
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