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13 November, 15:05

if 60.2 grams of Hg combines completely with 24.0 grams of Br to form a compound what is the percent compostiton of Hg in the compound

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  1. 13 November, 18:50
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    71.5 %

    Explanation:

    mercury + bromine ⟶ compound

    Mass/g: 60.2 24.0

    According to the Law of Conservation of Mass, the mass of the product must equal the mass of the reactants

    Mass of product = 60.2 + 24.0

    Mass of product = 84.2 g

    The formula for percent composition is

    % by mass = mass of component/total mass * 100 %

    % Hg = 60.2/84.2 * 100

    % Hg = 0.7150 * 100

    % Hg = 71.5 %
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