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Question 1 (8 points) 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 4-mm-thick sheet of palladium having an area of 0.18 mat 500°C. Assume a diffusion cocfficient of 10 x 10 m/s, that the concentrations at the high- and low-pressure sides of the plate are 2.2 and 0.5 kg of hydrogen per cubic meter of palladium, and that steady-state conditions have been attained