Essential University Physics: Volume 1 (3rd Edition)

Published by Pearson
ISBN 10: 0321993721
ISBN 13: 978-0-32199-372-4

Chapter 18 - Exercises and Problems - Page 332: 65


20 moles

Work Step by Step

Recall, a diatomic gas has 5 degrees of freedom, so its value of $C_v=2.5R$. Thus, we find the difference in the two values of $C_v$. $ \Delta C_v = 3R-2.5R = .5R$ Thus, it follows: $n =\frac{10}{.5}=20 \ moles$
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