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In two or more complete sentences, describe the five step process of fractional distillation that is used to refine crude oil.
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In two or more complete sentences, describe the five step process of fractional distillation that is used to refine crude oil.

User Winitzki
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Fractional distillation

heated crude oil enters a tall fractionating column , which is hot at the bottom and gets cooler towards the top. vapours from the oil rise through the column. vapours condense when they become cool enough.

User Michael McGowan
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