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What mass of O2 is 3.011 x 10^23 molecules (O2 = 32 g per mol)?
A8 g
B32 g
C24 g
D16 g
Answer & Solution
Correct answer: D. 16 g
3.011 x 10^23 molecules is 0.5 mol, and 0.5 x 32 g = 16 g.
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