A very thick slab of clay has an initial moisture content of 14wt%. Air is passed over the top surface to dry the clay. Assume a relative resistance of the gas at the surface is zero - the equilibrium moisture content at the surface is constant as 3.0wt% after drying has started. The diffusion of the moisture in the clay can be approximated by a diffusivity of DAB=1.29108 m2/s. After 1.0 hours of drying, calculate the concentration of water at points: 0.005,0.01, and 0.02m below the surface. Plot the concentration profile of the clay from 0 to 5 meters below the surface for an hour of drying, 8 hours of drying, and 1 day of drying. Attach one graph