When comparing two gases at the same temperature, the molecules of the gas with the smaller molecular weight have the higher rms speed.

Question

Quizplus · Accepted Answer

According to the kinetic theory of gases, the rms speed of gas molecules is directly proportional to the square root of their temperature and inversely proportional to the square root of their molecular weight. Therefore, for two gases at the same temperature, the gas with the smaller molecular weight will have higher rms speed.

When Comparing Two Gases at the Same Temperature, the Molecules