Write the complete balanced equation for the reaction that occurs when C3 H8 combusts in O2.

C₃H₈ + 5 O₂ → 3 CO₂ + 4 H₂O.

Explanation:

The combustion reaction is the reaction of hydrocarbon with oxygen that produces CO₂ and water. The complete combustion of 1.0 mole of C₃H₈ requires 5.0 moles of oxygen to react with that produce 3.0 moles of CO₂ and water. So, the balanced equation for the reaction that occurs when C₃H₈ combusts in O₂ is: C₃H₈ + 5 O₂ → 3 CO₂ + 4 H₂O.