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If 6.53 g of water are present, how many molecules are present?

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  • 1 decade ago
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    given: 6.53 g H2O

    want: x molecules H2O

    know: Nav=6.02 x10^23 molecules

    step 1: start with g given, go to mol, go to Nav

    step 2: check ans

    6.53 g H2O x(mol H2O/18.02 g H2O) x(6.02 x10^23 molecules H2O/mol H2O)= 2.18 x10^23 molecules H2O

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