A tank contains 28.0 kg of `O_(2)` gas at a gauge pressure of 6.80 atm. If the oxygen is replaced by helium, how many kg of the latter will be needed to produce a gauge pressure of 8.25 atm ?

A vessel contains hydrogen gas which exerts a pressure of 4 atm. If gas is replaced by equal mass of oxygen, the pressure exerted on the walls will be

A vessel contains hydrogen gas which exerts a pressure of 4 atm. If gas is replaced by equal mass of oxygen, the pressure exerted on the walls will be

A vessel contains 1 mole of O_(2) at 27^(@)C and 1 atm pressure. A certain amount of the gas was withdrawn and the vessel was heated to 327^(@)C to maintain the pressure of 1 atm. The amount of gas removed was

A vessel contains 1 mole of O_(2) at 27^(@)C and 1 atm pressure. A certain amount of the gas was withdrawn and the vessel was heated to 327^(@)C to maintain the pressure of 1 atm. The amount of gas removed was

A container consists of O_(2) gas at 4 atm pressure and 400K. If the volume of the container is 8.21 litre then calculte number of oxygen atoms present in the container.

An oxygen cylinder of volume 30 liters has an initial gauge pressure of 15 atm and a temperature of 27°C. After some oxygen is withdrawn from the cylinder, the gauge pressure drops to 11 atm and its temperature drop to 17°C. Estimate the mass of oxygen taken out of the cylinder. (R = 8.31 J mol-1 K_1, molecular mass of O2 = 32 u).

An empty LPG cylinder weighs 14.8 kg. When full, it weighs 29.0 kg and shows a pressure of 3.47 atm. In the course of use at ambient temperature, the mass of the cylinder is reduced to 23.0 kg. The final pressure inside the cylinder is atm. (Nearest integer) (Assume LPG to be an ideal gas)

A 3000 cm^(3) tank contains oxygen at 20^(@)C and the gauge pressure is 2.5 xx 10^(6) Pa . Find the mass of the oxygen in the tank. Take 1 atm = 10^(5) Pa .