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A bag contains a mixture of copper and lead BBs. the Average density of the BBs is 9.50g/cm^3. Assuming that the copper and lead are pure determine the relative amounts of each kind of BB
14 years ago

Answers

drwls
Look up the densities of lead and copper. Lead: 11.34 g/cm^3. Copper: 8.93 g/cm^3

If f is the fraction of the BBs that are copper (which would be a volume fraction), then 1-f is the fraction that are lead, then
8.93 f + 11.34(1-f) = 9.50

Solve for f
14 years ago

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