How do cold gases compare to hot gases in terms of diffusion rate?

Cold gases diffuse slower than hot gases due to the kinetic theory of gases, which states that the average kinetic energy of gas molecules is directly proportional to the temperature of the gas. When the temperature is higher, the gas molecules possess more kinetic energy, which leads to increased movement and faster diffusion.

In contrast, when the temperature is lower, the molecules have less kinetic energy and move more slowly. As a result, the diffusion rate of cold gases is significantly slower than that of hot gases. Factors such as molecular mass and the medium through which the gases are diffusing can also affect diffusion, but temperature is a primary factor in determining the rate of diffusion.

Therefore, the correct understanding is that cold gases do indeed diffuse more slowly compared to hot gases, contradicting the assertion that they diffuse quickly.