AVAGADRO number `= 6.02 XX 10^(21)` The relationship between average velocity `( bar(v))` and root MEAN square velocity `( u ) ` is `bar(v)= 0.9213 u` The mean kinetic energy of an IDEAL gas is independent of the pressure of the gas The root mean square velocity of the gas can be calculated by the formula `(3 RT // M)^(1//2)`