angelbourne angelbourne

29-09-2017
Chemistry

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an alloy contains 57 g of silver and 20g of copper what is the percentage silver in the alloy

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valeriaandrea62 valeriaandrea62

29-09-2017

Total weight of alloy is
67 + 20 = 87 g
67 g of which is gold
So % gold is 67/87* 100 = 77.01%

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