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22 November, 07:30

If you have 100 grams of water, how many grams of elemental hydrogen do you h

O 1800 grams

11.2 grams

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Answers (1)
  1. 22 November, 11:17
    0
    11.2 g

    Explanation:

    Given dа ta:

    Mass of water = 100 g

    Mass in grams of hydrogen = ?

    Solution:

    Number of moles of water:

    Number of moles = mass / molar mass

    Number of moles = 100 g / 18 g/mol

    Number of moles = 5.6 mol

    It is known that one mole of water contain two elemental hydrogen.

    Thus in 5.6 moles,

    5.6 * 2 = 11.2 mol

    Mass of hydrogen:

    Mass = number of moles * molar mass

    Mass = 11.2 mol * 1 g/mol

    Mass = 11.2 g
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