Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 3 - Chemical Reactions and Reaction Stoichiometry - Exercises - Page 114: 3.23e

Answer

236 amu

Work Step by Step

Gallium sulfide has molecular formula =$Ga_2S_3$ So, the molecular weight of Gallium and Sulfur is: Ga = 70 amu S = 32 amu MM ($Ga_2S_3$) = $(2\times70)+(3\times32) = 236 amu$ Note: 236 amu or 236 u, the two nomeclatures are equivalent.
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