. A sheet of HCP Ti 2 mm thick was exposed to a chloridating gas atmosphere on one side and a de-chlorinating atmosphere on the other side at 800 oC. After having reached steady state, the Ti sheet was rapidly cooled to room temperature. The concentration of chlorine at the two phase of the sheet were determined to be 0.678 kg Cl/m3 and 0.350 Kg Cl/m3 . a. Compute the diffusion coefficient if the diffusion flux is 2.6 x 10 -7 Kg Cl/ m2 s. b. Determine the diffusion pre-exponential factor if the activation energy for the diffusion of Cl in HCP Ti is 90,450 j/mol. c. Determine the diffusion coefficient at 750 oC.