lilherb27 lilherb27

22-10-2016
Chemistry

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Name some gaseous element in unpolluted air ?

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lemons2 lemons2

22-10-2016

Oxygen because trees release oxygen. Carbon dioxide because we release it when wr breathe out. Nitrogen because the atmosphere contains a certain amount of it.

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Аноним Аноним

22-10-2016

nitrogen oxygen and argon

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