Question

A gas jar contains 12.04*10^23 molecules of oxygen. The mass of oxygen in the jar is

Answer 1

Explanation:

No. of moles of O2= 12.04×10^23 molecules/NA(6.02×10^23)

=2 moles

Mass of O2 in its one mole=32g

2 moles of O2 make 2×32g of O2 or 64g of O2....

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