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: 144

Answer

Hf

Work Step by Step

Mass fraction of O: $15.2/100=2\times15.999\div(x+2\times15.999)$ Solving for x: $x=178.52\ g/mol$ This atomic weight is closest to Hafnium's.
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