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1 July, 22:00

An alloy contains 64 g of pure gold and 39 g of pure zinc. What is the percentage of zinc in the alloy

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  1. 1 July, 22:25
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    37.9 % of the alloy is zinc

    Explanation:

    Step 1: Date given

    Mass of pure gold = 64.0 grams

    Mass of pure zinc = 39.0 grams

    Step 2: Calculate Total mass

    Total mass = mass pure gold + mass pure zinc

    Total mass = 64.0 grams + 39.0 grams

    Total mass = 103 grams

    Step 3: Calculate % zinc

    % zinc = (mass zinc / total mass) * 100%

    % zinc = (39.0 grams / 103 grams) * 100%

    % zinc = 37.9 %

    37.9 % of the alloy is zinc
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