Chemistry, 02.03.2021 08:40 annyork03

PLEASE HELP How many moles of O2 are in the sample of 3.6 kilograms of air, if 21% of the air is oxygen O2 by mass?

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How many mol

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PLEASE HELP How many moles of O2 are in the sample of 3.6 kilograms of air, if 21% of the air is ox...