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6 April, 13:13

What mass of copper is consumed in the reaction with hydrochloric acid if 10.0 g of gas is collected?

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  1. 6 April, 13:37
    0
    317 g

    Explanation:

    Cu + 2HCl - -> CuCl2 + H2

    1 : 2 1 : 1

    1 mole of Cu = 63.5 g

    1 mole of H2 = 2g

    1 mole Cu produces = 1 mole of H2

    63.5 g of Cu produces = 2 g of H2

    So

    10 g of H2 will be produced from = (63.5/2) * 10 = 317 g of Copper
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