Finding The Mass..??

Question

The density of gasoline at room temperature is 0.70 g/mL. If the gas tank of a car holds 15.1 gallons (57.2 L), what is the mass of a tankful of gasoline?

Answer 1

( 57.2 L ) ( .70 g / mL ) ( 1000 mL / L ) = 40,000 g or 40 kg.