What is effusion?

A gas mixture consisting of He and CH_(4) gases in mole ratio 4:1 is present in a vessel at a pressure of 20 bar. Due to a fine hole in the vessel, the gas mixture undergoes effusion. What is the composition (or ratio) of the initial gas mixture that is effused out?

What is friction? What is the origin of friction?

Which of the following gases will have the same rate of effusion under identical conditions-

At a given condition, 20 L of SO_(2) gas a takes 60s for its effusion. At the same condition, the value of O_(2) gas that will effuse out in 30s is -

How is the rate of effusion of a gas at a given temperature related to its pressure and molar mass?

Composition of the equilibrium mixture (Cl_(2) hArr 2Cl) . Which is attained at 1200^(@)C , is determined by measuring rate of effusion through a pin-hole. It is observed that at 1.80 mmHg pressure, the mixture effuses 1.16 times as fast as Kryptom effuses under the same conditions. calculate the fraction of chlorine molecules dissociated into atoms. (Relative atomic mass of Kr=84).

Two containers A and B have the same volume. Container A contains 5 moles of O_2 gas. Container B contains 3 moles of He and 2 moles of N_2 . Both the containers are separately kept in vacuum at the same temperature. Both the containers have very small orifices of the same area through which the gases leak out. Compare the rate of effusion of O_2 with that of He gas mixture.

What is glucagon? What is its function?

What is dispersion of light? What is cause of it?

What are porins ? What role do they play in diffusion ?