1.

Molar m O2 = (O)× ___

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Answer:

One MOLE of oxygen gas, which has the FORMULA O2, has a mass of 32 g and contains 6.02 X 1023 MOLECULES of oxygen but 12.04 X 1023 (2 X 6.02 X 1023) atoms, because each molecule of oxygen contains two oxygen atoms.



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