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4 November, 20:31

A 69.1-g sample of h2o contains how many molecules of water?

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  1. 4 November, 23:10
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    The number of molecules of water is calculated as follows

    find the moles of water = moles=mass/molar mass

    moles = 69.1g/18 g/mol = 3.84 moles

    by use of Avogadro law constant

    that is 1 mole = 6.02 x10^23 molecules what about 3.84 moles of water

    the molecules of water = (3.84 x 6.02 x10^23) = 2.312 x10^24 molecules
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