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4 August, 22:44

In the decomposition of water. How many grams of Hydrogen will be produced by 20g of water?

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  1. 4 August, 23:04
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    The equation for the reaction is is 2H2O = 2H2 + O2

    Ratio of H to O in water = 2:1

    Molar mass of water = 2*1.008 + 15.999 = 18.015

    18.015 g gives 2*1.008 hydrogen

    20 gives 2 * 1.008 * 20 / 18.015

    = 2.24 g hydrogen to the nearest hundredth.
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