## Physics: Principles with Applications (7th Edition)

Published by Pearson

# Chapter 13 - Temperature and Kinetic Theory - Misconceptual Questions: 10

Choice A.

#### Work Step by Step

All the particles are in thermal equilibrium, i.e., at the same temperature. This means their average molecular kinetic energies will be the same. A helium atom has less mass than an oxygen molecule, so to have the same average KE, helium atoms must be moving faster on average.

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.