Equal volumes of two gases A and B diffuse through a porous pot in 20 and 10 seconds respectively. If the molar mass of the gas A is 80. Find the molar mass of the gas B.

A sample contains 10^(-2) kg of two substances A and B with half lives of 4 and 8 sec repsectively (Given that atomic mass of B is twice of A ). The mass of A and B left after 16 second is :

The rate if diffusion of methane at a given temperature is twice that of a gas X. The molar mass of the gas X is.

A and B are two isotopes having mass numbers 14 and 16 respectively. If the atomic number of A is 7, then how many neutrons will be there in B?

Derive an equation relating molar mass of an ideal gas with its density.

The density of a gas was found to be 2.92gl^-1 at 27^@C and 2.0 atm. Calculate the molar mass of the gas.

Equal masses of oxygen, hydrogen and methane are taken in a container in identical conditions. Find the ratio of the volumes of the gases.

The density of gas was found to be 2.92 g L^(-1) at 27° C and 2.0 atm . Calculate the molar mass of the gas.

2.9g of a gas 95^@C occupied the same volume as 0.184g of H_2 at 17^@C at the same pressure. What is the molar mass of the gas?