You can have a mass transfer coefficient over a surface when there is no flow (choose one): a) Yes; b) No; c) Sometimes. If there were no velocity boundary layer (velocity on the solid surface is the...

You can have a mass transfer coefficient over a surface when there is no flow (choose one): a) Yes; b) No; c) Sometimes.

If there were no velocity boundary layer (velocity on the solid surface is the same as bulk velocity, due to slip on the surface), the mass transfer coefficient would be (choose one): a) Very small; b) Infinite; c) Undefined.