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: 30

Answer

1.4

Work Step by Step

We know that the specific heat ratio of the mixture is equal to the sum of the number of moles of each gas (each multiplied by their respective heat ratio) over the number of moles of gas. Thus: $\gamma = \frac{(50)(1.29)+(30)(1.4)+(20)(1.67)}{50+30+20}=1.4$
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