A prospector finds a solid rock composed of granite 2650, Ask an Expert

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A prospector finds a solid rock composed of granite (? = 2650 kg/m3) and gold. The volume of the rock is 2.85 multiplied by 10-4 m3 and its mass is 2.71 kg.

(a) What mass of gold is contained in the rock?

(b) What percentage of the rock is gold by volume?

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