2. [25 points]: The diffusion of element A into element B is described by eq (5.13) in the textbook. At the temperature, the experiment is conducted of 400K the diffusion coefficient of A into B is equal to 11011cm2/s. If C0=1 (such as would occur when there is an inexhaustible supply of A at x=0 ). a) After 2 days of running the experiment, at what distances into the sample would the concentrations be equal to 0.5 and to 0.1 ? b) For a distance of 1cm, at what time would you expect to see a concentration of A=0.1 ? c) How would the answers to the above questions change if the absolute temperature was twice the value of the initial temperature? Assume the activation energy for migration of A into B is 1 eV, and that all other terms of Einstein's diffusion coefficient formula are independent of temperature