Question

derive the unsteady state diffusion of solid​

Answer 1

Answer:

Unsteady state diffusion or non-steady state diffusion is a form of diffusion in which the rate of diffusion is a function of time. This means the rate of diffusion is time-dependent. Therefore, the rate of the concentration with distance (dc/dx) is not a constant and the change of concentration with time is not zero.

Explanation:

I hope it helps.