A commonly used unit of mass in the English system is the pound-mass, abbreviated lbm, where 1 lbm = 0.454 kg.What is the density of gasoline in pound-mass per cubic foot? (Assume the density of gasoline is 7.40 ✕ 10^2 kg/m3.)

Answer 1

(7.40 x 10^2 kg/m3)*(1lbm/0.454kg)= density in lbm/m^3

1m=3.28ft and (1m=3.28ft)^3= 1m^3=35.29ft^3

(Density in lbm/m^3)*(1m^3/35.29ft^3)= answer in lbm/ft^3