[50 points] Compute and plot the steady-state distribution of concentration for the tank shown in Figure 1. The PDE governing this system is ac ac D - kc = 0 x2 2, and the boundary conditions are as shown. Employ a value of 0.5 for D and 0.1 for k. Use a small enough Ar = Ay = 0.5 so that your answer does not depend on the value. The wall boundary conditions correspond to zero derivative in the direction normal to the wall. c = 40 30 Wall T 10 Open boundary c = 100 Wall -10-