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 116: 3.62a

Answer

0.3 moles O2

Work Step by Step

Looking at the coefficients, you need 4 moles of KO2 to produce 3 moles of O2. Therefore, if we have 0.4 moles KO2 then 0.400 moles KO2 * (3moles O2/4moles KO2) = 0.3 moles
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