Assume a steady state diffusion of gas A through gas B, with constant total concentration Cm and diffusivity DAB. If the concentration of gas A at z=0 and z=L are as shown below, answer the following questions using both equimolar AB counterdiffusion and unimolecular diffusion of A (i.e., B is stagnant). 1. Sketch the concentration profile of A species between the given points (CA,0 and CA,L). 2. On both diagrams, show the direction arrow for: total flux NA, diffusive flux JA, and convective flux. Equimolar counterdiffusion Unimolecular diffusion 3. Is the total flux NA constant for each case? Justify your