Ores with as little as 0.25% by mass of copper are used as sources of the metal. (a) How

Chapter 22, Problem 22.79

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Ores with as little as 0.25% by mass of copper are used as sources of the metal. (a) How many kilograms of such an ore would be needed to construct another Statue of Liberty, which contains 2.03105 lb of copper? (b) If the mineral in the ore is chalcopyrite (FeCuS2), what is the mass % of chalcopyrite in the ore?

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