Physics, 20.09.2019 02:00 1963038660

British sterling silver is a copper-silver alloy that is 7.5% copper by weight. how many grams of pure copper and how many grams of british sterling silver should be used to prepare 250 grams of a copper-silver alloy that is 20% copper by weight? (round your answers to one decimal place.)

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British sterling silver is a copper-silver alloy that is 7.5% copper by weight. how many grams of pu...