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A mixture of ethanol (24% on a molar basis) and water is inside a capillary tube. Ethanol diffuses through a 10 cm deep stagnant film 

A mixture of ethanol (24% on a molar basis) and water is inside a capillary tube. Ethanol diffuses through a 10 cm deep stagnant film of air at a temperature of 25 C and 1 atm. Calculate the mass flow of ethanol, assuming it is constant throughout the tube. DAB =1,3210-5 m2/s.

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