3-1. Diffusion of A Through Stagnant B in a Liquid. The solute HCl(A) is diffusing through a thin film of water (B)2.0mm thick at 283K. The concentration of HCl at point 1 at one boundary of the film is 12.0wt%HCl (density 1=1060.7 kg/m3), and at the other boundary at point 2 it is 6.0wt%HCl(2=1030.3 kg/m3 ). The diffusion coefficient of HCl in water is 2.5109m2/s. Assuming steady state and one boundary impermeable to water, calculate the flux of HCl in kgmol/sm2