A block of aluminum occupies a volume of 15.0 mL and weighs 40.5 g. What is it density?
The mass has units of grams,
The volume will have units of
We are given the mass and the volume, both of which have good units, so all we have to do is plug the given values into the equation:
Thus, the block of aluminum has a density of 2.70 g/mL.