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Chemistry, 27.06.2019 03:30 jshhs

Dry air is about 20.95 % oxygen by volume. assuming stp, how many oxygen molecules are in a 50.0 g sample of air? the density of air is 1.19 g/l

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Dry air is about 20.95 % oxygen by volume. assuming stp, how many oxygen molecules are in a 50.0 g s...
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