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Engineering, 06.03.2020 23:52 yabfegi9669

The permeability coefficient of a type of small gas molecule in a polymer is dependent on absolute temperature according to the following equation: PM=PMoexp(-QpR⁢T) where and PMo and Qp are constants for a given gas-polymer pair. Consider the diffusion of hydrogen through a poly(dimethyl siloxane) (PDMSO) sheet 11 mm thick. The hydrogen pressures at the two faces are 22 kPa and 4 kPa, which are maintained constant. Assume a condition of steady state diffusion and the following: PM0=1.45×10−8(cm3 STP)(cm)/cm2-s-Pa Qp=13.7⁢ kJ/mol Compute the diffusion flux [in (cm3 STP)/cm2 –s] at 348 K. for this diffusion system. J = Enter your answer in accordance to the question statement cm3 STP/cm2-s

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