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 - Study Questions - Page 95i: 146


$Z=18\ g/mol$ $A=26\ g/mol$

Work Step by Step

Molar masses: $A_2Z_3:\ 15.9\ g\div0.15\ mol=106\ g/mol$ $AZ_2:\ 9.3\ g\div0.15\ mol=62\ g/mol$ $62=A+2\times Z\rightarrow A=62-2\times Z$ $106=2\times A+3\times Z$ $106=2\times (62-2\times Z)+3\times Z$ $Z=18\ g/mol$ $A=26\ g/mol$
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