Q3: Calculate the penetration rate for 304 stainless steel (71.75% Fe, 19% Cr, 9.25% Ni) in mils per year (mpy) and mm/yr. The density of steel is 7.9g/cm³. The atomic weight of Fe, Cr, and Ni are 55.85 g/mol, 52 g/mol, and 58.71 g/mol respectively.