Question

Molecular mass and rate of diffusion​

Answer 1

Answer:

Explanation:

Graham's law states that the rate of diffusion or of effusion of a gas is inversely proportional to the square root of its molecular weight. ... Therefore the rate of diffusion of different gases is inversely proportional to the square root of their mass densities.

Answer 2

Answer:

Explanation:

Molecular Mass:

Molecular mass is a number equal to the sum of the atomic masses of the atoms in a molecule. The molecular mass gives the mass of a molecule relative to that of the 12C atom, which is taken to have a mass of 12. Molecular mass is a dimensionless quantity, but it is given the unit Dalton or atomic mass unit as a means of indicating the mass is relative to 1/12th the mass of a single atom of carbon-12

Rate of diffusion:

Diffusion is a physical process that refers to the net movement of molecules from a region of high concentration to one of lower concentration. ... The rate of diffusion depends on the nature of interaction between the medium and material. For instance, a gas diffuses very quickly in another