Will you help me withi highschool chem please?

Question

The enthalpy of combustion of octane, C8H18, one of the major components of gasoline, is 5463 kJ/mole or 48 kJ/g. The density of octane is 0.70g/mL.

If your chemistry teacher's car requires approximately 10 L of octane in order to travel 100 km, how much energy does it require to travel 100 km?

Answer 1

10 L/100 km * 0.70 g/mL * 1000 mL/L * 48 kJ/g =

336,000 kJ/100 km or

336 MJ/100 km