Which of the following statements regarding the kinetic-molecular theory of gases are correct?
1) The average kinetic energy of a collection of gas molecules at a given temperature is proportional to m¹ / 2.
2) The gas molecules are assumed to exert no forces on each other.
3) All the molecules of a gas at a given temperature have the same kinetic energy.
4) The volume of the gas molecules is negligible in comparison to the total volume in which the gas is contained.
5) All gas molecules move with the same speed if they are at the same temperature.
