Boron is diffused into highly pure germanium at 1000oC (Q = 105 kcal/mol; DO = 1.1 x 10 m2/sec). A steady surface concentration of 1.5 at.% B prevails at this temperature. a) After diffusing for ½ hr at what location will a B content of 0.5 at.% be found? What will be the concentration of B at that location after 2 hrs of diffusion?