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The number of molecules in one mole of a substance A) Depends on the molecular weight...

The number of molecules in one mole of a substance
A) Depends on the molecular weight of the substance
B)depends of the atomic weight of the substance
C)is the same for all substances
D)depends on the density of the substances

Please explain why
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Answer #1
C)is the same for all substances

because N=6.023 * 10^23
it does not depend on mol. wt
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