Define what mass of ore is required to make a lead sphere

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Lead metal can be extracted from a mineral called galena, which contains 86.6 % lead by mass. A particular ore contains 68.5 % galena by mass.If the lead can be extracted with 92.5 % efficiency, what mass of ore is required to make a lead sphere with a 4.00 cm radius?

Reference no: EM13547353

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