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Chemical/Bio Engineering 1 Perform the same computation as in Sec. 32.1, but use Ax = 1.25. 2 Develop a finite-element solution for the steady-state system of Sec. 32.1. 3 Compute mass fluxes for the steady-state solution of Sec. 32.1 using Fick's first law. 4 Compute the steady-state distribution of concentration for the tank shown in Fig. P32.4. The PDE governing this system is D kc = 0 and the boundary conditions are as shown. Employ a value of 0.5 for D and 0.1 for k. 5 Two plates are 10 cm apart, as shown in Fig. P32.5. Initially, both plates and the fluid are still. At / = 0, the top plate is moved at a constant velocity of 8 cm/s. The equations governing the motions of the fluids are Vail a Vall d water = Hail and ar = water ar and the following relationships hold true at the oil-water interface: Dall = Vener and Poll ax ax What is the velocity of the two fluid layers at / = 0.5, 1, and 1.5 s at distances x = 2, 4, 6, and 8 cm from the bottom plate? Note that Awater and pan = 1 and 3 cp, respectively