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WHAT WILL BE THE MASS OF 10,000 WATER mOLECULES? HOW MANY MOLECULES ARE CONTAINED IN 0.45 MOLES OF WATER?

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WHAT WILL BE THE MASS OF 10,000 WATER mOLECULES? HOW MANY MOLECULES ARE CONTAINED IN 0.45 MOLES OF WATER?

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  1. H2O ...2 + 16 = 18g/mol

    10k molecules/ 6.02*10^23molecules/mol = 1.67*10^-20 mol

    1.67*10^-20 mol * 18g/mol = 2.989*10^-19 g = 0.0002989 fg

    0.45mol * 6.02*10^23molecules/mol = 2.70996*10^23 molecules

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