Mass Transfer
Henry's law states that the

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

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Mass Transfer
Bollman extractor

Employs only counter-current extraction
Is used for extraction of oil from oilseed
Is a centrifugal extractor
Is a static bed leaching equipment

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