Sterling silver is a solid solution of silver and copper. If a piece of a sterling silver necklace has a mass of 130.0g and a volume of 12.53mL, calculate the mass percent of copper in the piece of necklace. Assume that the volume of silver present plus the volume of copper present equals the total volume. (Density of Cu=8.96g/cm3; density of Ag=10.5g/cm3.) Masspercentofcopper=totalmassmassofcopper100Masspercentofcopper=%