What is the mass in kilograms of 18.5 gallons of gasoline? (Note: the density of gasoline is 0.70 g/mL.)

What is the density, in g/cm^{3}, of a 1.5 kg cube whose edges are each 5 cm?

The density of aluminum is 2.7 g/mL. What volume (in L) would a 50.2 g sample of aluminum occupy?