Answer = 2.0 x 10^-4 g... Show all work, TY.

4) The diffusion of a drug (M = 357.8 g/mol) through skin is monitored by applying a 0.115 M solution of the drug to the surface of the skin and measuring the concentration of the drug in a receiving fluid on the other side of the skin. Initially, the receiving fluid contains no drug (i.e. O M), and the skin thickness is 350 um. Given that the diffusion coefficient for the drug through skin is 6.3 x 10-13 mst, and the area of the skin is 0.636 cm, estimate the mass of drug that traverses the skin in 12 hours. Mass = 2.0 x 104 g =