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March 28, 2017

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A gold prospector finds a solid rock that is composed solely of quartz and gold. The mass and volume of the rock are, respectively, 13.3 kg and 3.56 × 10-3 m3. The density of gold is 19 300 kg/m3, and the density of quartz is 2660 kg/m3. Find the mass of the gold in the rock.

  • physics - ,

    mass gold+mass quartz=13.3

    massgold/densitygold+massquartz/densityquartz=3.56E-3

    you have two equations, two unknowns, solve for mass gold

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