High School

The quantity called mass density is the mass per unit volume of a substance. What are the mass densities in basic SI units of the following objects?

A. A 215 cm³ solid with a mass of 0.0179 kg.

B. 95 cm³ of a liquid with a mass of 77 g.

Answer :

a. The mass density of the solid object can be calculated as follows:

mass density = mass / volume

mass density = 0.0179 kg / (215 cm^3)

mass density = 0.0179 kg / 0.0215 m^3

mass density = 8.27 kg/m^3

b. The mass density of the liquid can be calculated as follows:

mass density = mass / volume

mass density = 77 g / (95 cm^3)

mass density = 77 g / 0.0095 m^3

mass density = 8105 kg/m^3

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