Question: Problem 4: Water evaporating from a pond at 298K does so by molecular diffusion across an air film 1.5mm thick. If the relative humidity of

Problem 4: Water evaporating from a pond at 298K does so

Problem 4: Water evaporating from a pond at 298K does so by molecular diffusion across an air film 1.5mm thick. If the relative humidity of the air at the outer edge of the film is 20% and the total pressure is 1 bar, estimate the drop in the water level per day, assuming that conditions in the film remain constant. Diffusivity of water vapor in air is 0.263cm2/s

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