Two Film Theory

0:00 What the 2-film theory is 1:50 Linear gradient? 2:42 2-film with Stefan diffusion? 4:10 Mass trf coeff and equimolar counter diffusion 5:50 Nearly linear gradients and mass trf coeff 7:43 Non-linear gradient and mass trf coeff? 8:49 Sherwood number Explains two film theory and how that relates to equimolar counter diffusion, mass transfer coefficients, stefan diffusion, diffusivity and Sherwoods number