General Chemistry 10th Edition

Published by Cengage Learning
ISBN 10: 1-28505-137-8
ISBN 13: 978-1-28505-137-6

Chapter 2 - Atoms, Molecules, and Ions - Questions and Problems - Page 82: 2.56

Answer

See work below.

Work Step by Step

According to the picture, there are 24 atoms, 8 of which are blue and 16 of which are orange. Using isotopic masses in the problem, the atomic mass of element X is - $\frac{8}{24}$ (47.621 amu) + $\frac{16}{24}$ (51.217 amu)= 15.8737+34.1447=50.0184=50.018 amu
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