Chemistry: Principles and Practice (3rd Edition)

Published by Cengage Learning
ISBN 10: 0534420125
ISBN 13: 978-0-53442-012-3

Chapter 2 - Atoms, Molecules, and Ions - Questions and Exercises - Exercises - Page 87: 2.91

Answer

(a) (39.098 x 2) + (1 x 32.06) + (16 x 4) = 174.26 u (b) (107.87) + (1 x 14) + (16 x 3) = 169.87 u (c) (1 x 14) + (1 x 4) + (35.45) = 53.45 u

Work Step by Step

We find, using the atomic masses on the periodic table: (a) (39.098 x 2) + (1 x 32.06) + (16 x 4) = 174.26 u (b) (107.87) + (1 x 14) + (16 x 3) = 169.87 u (c) (1 x 14) + (1 x 4) + (35.45) = 53.45 u
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