An ideal gas is in a sealed rigid container. The average kinetic energy of the gas molecules depends most on An ideal gas is in a sealed rigid container. The average kinetic energy of the gas molecules depends most on the temperature of the gas. the number of molecules in the container. the size of the container. the mass of the molecules.

The temperature of the gas.

Explanation:

According to the kinetic molecular theory, the molecules of a substance are in constant random motion.

If an ideal gas is contained is a sealed rigid container, the average velocity of the gas molecules is dependent of the temperature of the gas.

Recall that temperature is defined as the average kinetic energy of the molecules of a body.