Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 13 - Temperature and Kinetic Theory - Misconceptual Questions - Page 385: 9

Answer

Choice E.

Work Step by Step

As stated in equation 13-8, the molecules will have the same average kinetic energy. KE is proportional to the mass of the molecule and the square of the rms speed. Since the mass of molecule B is half that of A, the rms speed of molecules in gas B is $\sqrt{2}$ times that in gas A.
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