What is the equation for the kinetic energy of 1 mole of a gas?

Why there is no change in temperature when an ideal gas expands?

Find the density of a gas with molecular mass 44.

Do all the molecules of the same gas have the same velocity? If not, give a reason for it ?

Define critical temperature of a gas.

Define critical pressure.

Define critical volume.

Define evaporation.

Define vapour pressure.

Define boiling point of liquid.