According to the postulates of kinetic-molecular theory, the molecules of all gases at a given temperature have the same average speed.

Question

Quizplus · Accepted Answer

The kinetic-molecular theory states that the average kinetic energy of gas molecules is the same for all gases at a given temperature, not the average speed. The speed of gas molecules also depends on their mass, with lighter molecules moving faster on average.

According to the Postulates of Kinetic-Molecular Theory, the Molecules of All