The density of a substance is equal to the ratio of mass of substance to the volume. The formula for density is;

Density = mass / volume

Density = 3.12 g/ cm

mass = 28.1 grams

Volume = mass / density

Volume = 28.1 grams / 3.12 grams / cm

Volume = 9 centimeter cube

So, the volume of the bromine is 9 centimeter cube.

Density = mass / volume

Density = 3.12 g/ cm

^{3}mass = 28.1 grams

Volume = mass / density

Volume = 28.1 grams / 3.12 grams / cm

^{3}Volume = 9 centimeter cube

So, the volume of the bromine is 9 centimeter cube.