Question

Molecular diffusion and knudsen diffusion

Answer 1

molecular diffusion is a thermal motion of all particles at temperature above absolute zero. the rate of this movement is a function of temperature , viscosity of the fluid and size of particles.

Answer 2

Answer:

Diffusion is the movement of a substance from an area of high concentration to an area of low concentration. Diffusion happens in liquids and gases because their particles move randomly from place to place. Diffusion is an important process for living things; it is how substances move in and out of cells.