Mass Transfer
Molecular diffusivity of a liquid

Increases with temperature
Decreases with temperature
May increase or decrease with temperature
Is independent of temperature

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Mass Transfer
An example of elutioh is

Dissolution of tannin out of tree barks by water
Separation of uranium oxide from its ore by H₂SO₄ in a Pachuca tank
Recovery of vegetable oils from seeds
Separation of sugar from sugar beet by hot water

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