Question 1
According to the kinetic molecular theory, as the absolute temperature of a gas is doubled, the average kinetic energy (KEave) of its molecules will
change in which of the following ways?

the average kinetic energy will double as well

Explanation:

According to the kinetic molecular theory of gases, the average kinetic energy of the particles in a substance is directly proportional to the absolute temperature of the gas (in Kelvin).

Mathematically:

where

KE is the average kinetic energy of the particles in a gas

k is the Boltzmann constant

T is the absolute temperature of the gas

From the equation, we see that

In this problem, the absolute temperature of the gas is doubled, so the new temperature is

Therefore, the new kinetic energy of the molecules will be

So, the average kinetic energy will double as well.