Molar volume is the volume occupied by 1 mol of any (ideal) gas at standard temperature and pressure (STP : 1 atmospheric pressure, `0^(@)C`). Show that it is 22.4 litres.

The volume of 1 mol of a gas at standard temperature and pressure is .

Write the volume of vapour of 1 g water at 1 atmospheric pressure.

If the intermolecules forces vanish away, the volume occupied by the molecules contained in 4.5 kg water at stantard temperature and pressure will be given by

A cylinder of fixed capacity 44.8 litres contains helium gas at standard temperature and pressure. What is the amount of heat needed to raise the temperature of the gas in the cylinder by 15.0^(@)C ? ( R= 8.31Jmol^(-1)K^(-1) )

A weightless piston divides a thermally insulated cylinder into two parts of volumes V and 3V. 2 moles of an ideal gas at pressure P = 2 atmosphere are confined to the part with volume V =1 litre. The remainder of the cylinder is evacuated. The piston is now released and the gas expands to fill the entire space of the cylinder. The piston is then pressed back to the initial position. Find the increase of internal energy in the process and final temperature of the gas. The ratio of the specific heats of the gas, gamma =1.5 .