a volume of 64cm3 has a mass of 672g the density of pure silver is known to be 10.5g/cm3 based on this information could the metal be pure silver

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using the 10.5g/cm³ find the mass of silver
so we have to find the mass of the sample
M = V x D
M = 64 x 10.5 =627g
so the sample is pure silver as its theoretical mass based on its density is equal to the mass of the sample
hope that helps