Question

If a 747 contains 155,211 l of fuel, what is the mass of the fuel in kilograms? assume the density of the fuel to be 0.768 g/cm3.

Answer 1

The answer is 119,202 kg
 The conversion factor is 0.768 g / cm3 to take it to kg / L multiply by a thousand and divide by a thousand.
 Then 0.768g / cm3 = 0.768kg / L.
 The mass is 155,211 L * 0,768kg / L = 119,202 kg