calculate the number of moleculesin each cubic metre of a gas at 1 atm and `27^(@)C`.

Calculate the number of molecules persent in 1.12xx10^(-7) c.c. of a gas at STP (c.c.- cubic centimeters = cm^(3) ).

Calculate the number of moles of hydrogen present in 10 dm^(3) of the gas at 25^(@)C and 1.5 atm pressure.

Calculate the weight of methane in a 9 L cylinder at 16 atm and 27^(@)C temperature. ( R=0.08 L atm K^(-1)mol^(-1) )

Calculate the volume occupied by 96 g CH_(4) at 16 atm and 27^(@)C(R -0.08 litre atm K^(-1) mol^(-1)) .

The tempareture and humdity of air are 27^(@)C and 50% on a particular day. Calculate the amount of vapour that should be added to 1 cubic metre of air to saturate it. The saturation vapour pressure is 3600Pa.

The tempareture and humdity of air are 27^(@)C and 50% on a particular day. Calculate the amount of vapour that should be added to 1 cubic metre of air to saturate.it. The saturation vapour present in the room.

The tempareture and humdity of air are 27^(@)C and 50% on a particular day. Calculate the amount of vapour that should be added to 1 cubic metre of air to saturate it. The saturation vapour pressure is 3600Pa.