Purification of hydrogen gas by diffusion through a palladium sheet (The hydrogen gas pressures at the high- and low-pressure sides have reached a constant value.) Carbonization of a Fe-C alloy at 1100°C (The surface carbon concentration has been maintained at constant) The drive-in heat treatment of a semiconductor doping process. (Total amount of impurity on the surface, which has been introduced from the predisposition step, is a constant) Is the diffusion process a steady state or non-steady state? Using bullet points explain why Is Fick's first law or second law used? Write the equation accordingly If Fick's 2nd law is used, write the boundary conditions. If Fick's 2nd law is used, write the solutions for the Fick's 2nd law equation by applying the above boundary conditions. Is the diffusion process temperature dependent? If the process is temperature dependent, what factor (variable) in your equation above is influenced by temperature. Write the equation showing the temperature dependence. Plot the schematic concentration profile with correct notations( axis titles, marks for different time/location if apply)