A brief History of the US ( ) Penny Composition
b) Density of pure copper. c) Density of pure zinc A Numerical Example (I): A piece of gold jewelry weighing 9.35 g. Its volume is measured 0.654 g/cm3. Assume that the metal is an alloy of gold and silver, which have densities of 19.32 g/cm3 and 10.49 g/cm3, respectively. Calculate the percentage of gold (by mass) in the jewelry.
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