Chemical Process
Wax is a

Mixture of glycerides
Mixture of esters of polyhydric alcohols excepting glycerine
Mixture of glycerides of fatty acids
Liquid at room temperature

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Chemical Process
Reverse osmosis is normally used for the

Separation of isotopes of uranium from gaseous uranium hexaflouride
Desalination of brackish water to produce potable (drinking) water
Separation of helium from natural gas
Purification of oxygen

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