Calculate the ratio of the mean free paths of the molecules of two gases having molecular diameters 1 and 2. The gases may be considered under identical conditions of temperature, pressure and volume.

A mixture of O_(2) and gas "Y" ( mol. wt. 80) in the mole ratio a:b has a mean molecular weight 40. What would be mean molecular weight, if the gases are mixed in the ratio b:a under identical conditions ? ( gases are )

Densities of two gases are in the ratio 1: 2 and their temperatures are in the ratio 2:1 , then the ratio of their respective pressure is

Under the identical conditions of temperature, the density of a gas X is two times to that of gas Y while molecular mass of gas Y is three times that of X. Calculate the ratio of pressure of X and Y.

At the same temperature and pressure and volume of two gases which of the following quantities is constant?

A gaseous mixture of propane and butane of volume 3 litre on complete combustion produces 11.0 litre CO_2 under standard conditions of temperature and pressure. The ratio of volume of butane to propane is :

What is mean free path of a gas molecule? Show that the mean free path is inversely proportional to the pressure of the gas. Does the mean free path depend upon the temperature of the gas?

The ratio of vapour densities of two gases at the same temperature is 8:9. Compare the r.m.s. velocities of their molecules

Two vessels of the same size are at the same temperature. One of them holds on kg of H_2 gas and another 1 kg of N_2 gas. Which of the vessels is under greater pressure and why?

Two separate bulbs contain ideal gas A and B . The density of a gas A is twice that of a gas B . The molecular mass of A is half that of gas B . The two gases are at the same temperature. The ratio of the pressure of A to that gas B is

Two perfect gases at absolute temperatures T_1 and T_2 are mixed. There is no loss of energy. Find the temperature of the mixture if the masses of the molecules are m_1 and m_2 and the number of the molecules in the gases are n_1 and n_2 respectively.