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14 September, 06:29

Through the complete electrolysis of a sample of pure water, a student collects 14.0 grams of hydrogen gas and 112.0 grams of oxygen gas. What mass of water (in grams), if it reacted completely, was initially present

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  1. 14 September, 07:16
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    Mass of water undergone electrolysis = 126 gram

    Explanation:

    By law of conservation of mass, mass cannot be destroyed or created.

    So, initial mass = final mass

    Electrolysis of a sample of pure water, a student collects 14.0 grams of hydrogen gas and 112.0 grams of oxygen gas

    So final mass = 14+112 = 126 gram = Initial mass

    Mass of water undergone electrolysis = 126 gram
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