Mass Transfer
The cooling effect in a cooling tower can be speeded up by

Reducing the humidity of the air
Reducing the barometric pressure
All of the listed here
Increasing the air velocity and area of exposed wet surface

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Mass Transfer
Henry's law states that the

Partial pressure is equal to the product of the mole fraction and total pressure
Vapour pressure is equal to the product of the mole fraction and total pressure
Partial pressure of a component over a solution is proportional to the mole fraction in the vapour
Partial pressure of a component over a solution is proportional to its mole fraction in the liquid

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Mass Transfer
Steam distillation is used to

Avoid thermal decomposition of a component
Reduce the number of plates
Increase the total pressure of distillation
Increase the efficiency of separation

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