10) The purification of hydrogen gas by diffusion through a palladium sheet was discussed in Section 5.3. Compute the number of kilograms of hydrogen that pass per hour through a 6mm thick sheet of palladium having an area of 0.25m2 at 600C. Assume a diffusion coefficient of 1.7108m2/s, that the respective concentrations at the highand low-pressure sides of the plate are 2.0 and 0.4kg of hydrogen per cubic meter of palladium, and that steadystate conditions have been attained. 11) For a steel alloy it has been determined that a carburizing heat treatment of 15 hour duration will raise the carbon concentration to 0.35wt at a point 2.0mm from the surface. Estimate the time necessary to achieve the same concentration at a 6.0-mm position for an identical steel and at the same carburizing temperature. 12) A specimen of copper having a rectangular cross section 15.2mm19.1mm(0.60in.0.75in.) is pulled in tension with 44,500N(10,000lb) force, producing only elastic deformation. Calculate the resulting strain