A vessel of 2 lit. capacity contains hydrogen at 380 mm pressure at 27°C. 16 gm of O2 is added to the container at constant temperature, then find the final total pressure and final partial pressure of H2 . Sol. As partial pressure of a gas is independent from the pressure of other gas, initial as well as final partial pressue of H2 gas,

A mixture of CO and CO2 is found to have a density of 1.50 g/litre at 30oC and 730 mm. The mole percent of CO in the mixture is

The density of methane at 2.0 atmosphere pressure and 27°C is

A spherical balloon of 21 cm diameter is to be filled up with hydrogen at 0oC and 1 atm from a cylinder containing the gas at 20 atmosphere at 27oC. If the cylinder can hold 2.82 litre of water at 0oC and 1 atm, calculate the number of balloon that can be filled up.

When 3.2 g of sulphur is vapourised at 450°C and 723 mm pressure, the vapours occupy a volume of 780 ml. What is the molecular formula of sulphur vapours under these conditions?