The mass of fuel in an airplane must be determined before takeoff. 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.

Solution 111P :

Given :

Density of fuel = 0.768 g/cm3.

Volume of fuel = 155,211 L

Mass of fuel in Kg = ?

Mass of fuel is :

= Volume of fueldensity of fuel.

Here the volume of fuel is in L and density is in g/cm3. So,let’s convert the volume in L to cm3:

1 L = 1000 cm3

Therefore,155,211 L in cm3 is :

= 155211000 cm3.