Which has a greater mass: a kiloliter of liquid nitrogen (density of 0.808 g/mL) or a kiloliter of gasoline (density of 0580 g/mL)?
Liquid Nitrogen is heavier than Gasoline
Looking at the expression of density:
Rearranging this expression to find mass:
Therefore, according to this expression, at constant volume, when
The answer then, Liquid Nitrogen is heavier than Gasoline.