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Chemistry..

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Pelly8910 | 12:35 Sat 17th Sep 2011 | Science
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At very low temperatures, air becomes liquid. Liquid nitrogen is made from liquid air by a process of distillation.

Why can liquid air be separated in this way?

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Each component in the liquid air has a different boiling point. The one with the lowest boiling point evaporates first.
12:43 Sat 17th Sep 2011
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