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2. Iron has a density of 7.86 g/cm). A sample of an unknown metal is measured and found to be
2.25 cm x 1.5 cm x 2.25 cm. The mass of the sample is 55.75 g. Is the sample Iron? Explain.

Respuesta :

The volume of sample = 2.25(1.5)(2.25) = 7.59375 cm3
Density = mass / volume
Density = 55.75 / 7.59375 = 7.34156 g/cm3

As the density of iron is 7.86 g/cm3 instead, it is not iron

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