$(1$ pt$)$ What are the dimensions of permeate flux, permeability coefficient, permeance and perm$-$selectivity?

$(1$ pt$)$ Under the solution$-$diffusion model, what are the steps involved in the transport of gases from the retentate side to the permeate side

Str $(1$ pt$)$ Under the solution$-$diffusion model, the permeability is equal to the multiplication of what membrane properties?

$(1$ pt$)$ What is the adsorption coefficient and how it relates to the adsorption isotherm?

$(1$ pt$)$ What are the three types of diffusion in pores, and what are their differences?