An LPG cylinder when full contains '14.2 kg' gas and exerts a pressure of '2.5 atm .' If half of its gas is consumed what will be the pressure of the gas inside the cylinder ?

Calculate the total preśsure in a '10 L' cylinder which contains '0: 4 g' of helium, '1.6 g' of oxygen and '1.4 g' of nitrogen at '27^circ C'. Also calculate the partial pressure of helium gas. in the cylinder. Assume ideal behaviour.for gases?

A cylinder with a movable piston constant moles of hydrogen air standard temperature and pressure. The walls of the cylinder are made of a heat insulator, and the piston is insulated by having a pile of sand on it. By what factor does the pressure of the gas increase if the gas is compressed to half its original volume?