An antique coin is a mixture of silver and copper. The coin has a mass of 1.120 10-8 kg and in water weighs 0.8017 N. Determine the mass of silver in the coin. Use 1.05 164 kg/m3 as the density of silver, 7.89 193 kg/m3 as the density of copper, and 100 kg/m3 as the density of water.

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