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Chemistry help with density?

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If a crown weighing 4lb 13 oz displaces 186mL of water is the grown made of pure gold.(d=19.3g/cm^3)?

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  1. 4 lbs 13 oz = 2183 grams (1 lb = 453.6 g)

    (4+13/16 lbs = 4.8125 lbs; 4.8125 x 453.6 = 2183 g)

    2183 g / 186 mL = 11.7 g/cm^3

    not pure gold

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