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The purification of hydrogen gas is possible by diffusion through a thin palladium sheet. Calculate the number of kilograms of hydrogen that pass per hour through a 4.0-mm-thick sheet of palladium having an area of 0.13 m2 at 500°C. Assume a diffusion coefficient of 5.1 * 10-8 m2/s, that the concentrations at the high - and low-pressure sides of the plates are 2.9 and 0.31 kg/m3 of hydrogen per cubic meter of palladium, and that steady-state conditions have been attained.

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  1. 18 June, 14:46
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    Answer: 5.36*10-3kg/h

    Where 10-3 is 10 exponential 3 or 10 raised to the power of - 3.

    Explanation:using the formula

    M = JAt = - DAt*Dc/Dx

    Where D is change in the respective variables. Insulting the values we get,

    =5.1 * 10-8 * 0.13 * 3600 * 2.9 * 0.31 / 4*10-3.

    =5.36*10-3kg/h
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