Calculate the number of molecules of methane in `0.50 m^3` of the gas at a pressure of `2.0 xx 10^2 kPa` and a temperature of exactly 300k

Calculate the number of molecules of methane in 0.5m^3 of the gas at a pressure of 2 xx 10^2 kPa and a temperatue of exactly 300 K .

Calculate the number of moles of hydrogen and gas present in 0.5 m^3 sample of hydrogen gas at a pressure of 101.325 Pa and at 27^@C .

Calculate the volume of 1 mole of a gas at exactly 20^@C at a pressure of 101.35 kPa.

Calculate the volume of 1 mol of a gas at exactly 20^@C at a pressure of 101.35 kPa .

Calculate the number of molecules in one litre of gas at N.T.P., if mass of each molecule is 4.55 xx 10^-25 kg and its R.M.S. velocity at N.T.P. is 350 m//s (P = 10^5N//m^2 ).

Calculate the pressure in atm of 1.0 mol of helium in a 2.0 dm^3 container at 20.0^@C .

Calculate the work done when 5 moles of an W, ideal gas expanded from 1m^3 to 10m^3 against a constant external pressure of 2.026 xx 10^2 Nm^(-2) .