Physics, 29.11.2019 00:31, Jazminfun70

In a sample of 18-karat gold, 75 percent of the total mass is pure gold, while the rest is typically 16 percent silver and 9 percent copper. if the density of pure gold is rhogold=19.3g/cm3, while the densitites of silver and copper are respectively rhosilver=10.5g/cm3 and rhocopper=8.90g/cm3, what is the overall density rho18kt of this alloy of 18-karat gold?

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In a sample of 18-karat gold, 75 percent of the total mass is pure gold, while the rest is typically...