What is the dimensionless Schmidt number a function of? Select one: a. liquid density, liquid velocity, diameter of pipe and liquid viscosity O b. mass transfer co-efficient, length of a flat plate and diffusivity co-efficient O c. liquid density, mass transfer co-efficient and length of a flat plate O d. liquid viscosity, liquid density and the diffusivity co-efficient O e. liquid viscosity, liquid density and the mass transfer co-efficient What are the three regions of mass transfer? a. (1) turbulent diffusion in viscous film sublayer; (2) turbulent and molecular diffusion in the transition or buffer layer; (3) predominantly molecular diffusion in the turbulent layer. O b. (1) molecular diffusion in viscous film sublayer; (2) turbulent and molecular diffusion in the transition or buffer layer; (3) predominantly turbulent diffusion in the turbulent layer. O c. (1) molecular diffusion turbulent layer; (2) turbulent and molecular diffusion in the transition or buffer layer; (3) predominantly turbulent diffusion in the viscous layer. O d. (1) molecular diffusion in viscous film sublayer; (2) turbulent diffusion in the transition or buffer layer; (3) turbulent diffusion in the turbulent layer. O e. (1) molecular diffusion in viscous film sublayer; (2) molecular diffusion in the transition or buffer layer; (3) molecular and turbulent diffusion in the turbulent layer