# Question #9245f

##### 1 Answer

Nov 15, 2014

A mole of gasoline will get you 1,303 kcal of energy. If we, somehow, figure out the number of moles of gasoline in 3 gallons, we'd be able to know the answer.

**Step 1:** First of all, there are 11,355 ml in 3 gallons assuming that there are 3785 ml in one gallon.

**Step 2:** Now, the density of octane is given as 0.7 g/ml, that is, there are 0.7 grams in 1 ml. This means that there are

**Step 3:** The molar mass of octane is

And so, if there is 1,303 kcal of energy from a mole of octane, then there