Question

What is the kinetic energy of gas molecules at absolute zero?

Answer 1

1. The temperature is equal to $0K$ at absolute zero.
2. The average kinetic energy of the molecules is directly proportional to the temperature of the gas. This can be derived from the kinetic theory of gases.
3. The relationship between the average kinetic energy and temperature is $\frac{K}{3N}=\frac{k_{B}T}{2}$. Here, $K$ is the average kinetic energy, $N$ is the total number of molecules, $k_B$ is Boltzmann's constant and $T$ is the temperature.

Hence, the kinetic energy of the gas molecules will be zero.