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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