Species A is evaporating from a flat surface into species
B. Assume that the concentration profile for species A in the concentration boundary layer is of the form CA( y) = Dy2 + Ey + F, where D, E, and F are con- stants at any x-location and y is measured along a nor- mal from the surface. Develop an expression for the mass transfer convection coefficient hm in terms of these constants, the concentration of A in the free stream CA,oo and the mass diffusivity DAB. Write an expression for the molar flux of mass transfer by con- vection for species A.