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'Copper' pennies actually contain very little copper. If a penny contains 93.753 % of its total...

'Copper' pennies actually contain very little copper. If a penny contains 93.753 % of its total volume zinc and 6.247 % of its total volume copper, what is its density? (d of Cu = 8.95 g/cm3; d of Zn = 7.14 g/cm3.) Answer: g/cm3

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