Mass Transfer
Unit of molal diffusivity is

Gm moles/cm². sec
Cm²/sec gm . mole
Gm moles/cm² . sec
Gm moles/cm. sec

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Mass Transfer
Dew point of an air-water vapor mixture

Corresponding to any point on the humidity chart is obtained by projecting a line through this point parallel to the temperature axis and to the saturation curve
Decreases with decrease in pressure
At constant humidity & total pressure is fixed
All of the listed here

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