Write a balanced equation for the complete combustion of propane, C3H8. Do not enter phase symbols. Enter the alkane formula as C3H8.

C3H8 + 5O2 = > 3CO2 + 4H2O

Explanation:

Hydrocarbon combustion is the reaction between a hydrocarbon and O2 producing CO2 and water.

C3H8 + O2 = > CO2 + H2O

First we balance the C and H.

C3H8 + O2 = > 3CO2 + 4H2O

Now we balance O for the answer!

C3H8 + 5O2 = > 3CO2 + 4H2O