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16 March, 02:02

The molar mass of water (H2O) is 18.0 g/mol. A sample of water has a mass of 18.0 g. How many moles of water are contained in this sample? 1.00 18.0 36.0 324

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  1. 16 March, 02:24
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    Answer: 1.00

    Explanation:

    Given that,

    Amount of moles of H2O (n) = ?

    Mass of H2O in grams = 18.0g

    For Molar mass of water H2O, use the molar masses:

    Hydrogen, H = 1g;

    Oxygen, O = 16g

    H2O = (1g x 2) + 16g

    = 18.0g/mol

    Since, amount of moles = mass in grams / molar mass

    n = 18.0g / 18.0g/mol

    n = 1.00 mole

    Thus, there are 1.00 mole of water are contained in this sample
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