Oxygen diffuses through a stagnant layer of air, 1mm thick, ambient temperature

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Oxygen diffuses through a stagnant layer of air, 1mm thick, ambient temperature 28°C and 1atm total pressure. The partial pressure of oxygen on two sides of layer is P₁=0.9atm and P₂=0.1atm respectively. Calculate the value of Molar flux (in mol/m².s) with respect to an observer moving with molar average velocity. Calculate this value at the end of the path where P₂=0.1atm. Use R=8.205*10⁻⁵m³atmK⁻¹mol⁻¹.

Options:

A . 2.713

B . 1.713

C . 0.1713

D . 0.01713

Answer: Option B
Answer: (b).1.713

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