[ebernal22]

A) If the combustion of octane provides –5508.9 kJ/mol and the combustion of propane provides –2220.8 kJ/mol, how many kg (3 sig. fig.) of propane gas (LPG) will provide the same energy as 11 kg of octane gas. _10.5__ kg

B) If you were to burn 11 kg of octane gas, how many liters (3 sig. figs) of carbon dioxide would be produced at STP?
  17280 L  (correct i got this)

C) If you were to burn the number of kg of LPG that you determined would produce the same energy as 11 kg of octane above, how many liters (3 sig. figs) carbon dioxide would be produced at STP? ___ L  

C is giving me trouble help greatly appreciated !!!

[sjb]

What is your balanced equation for the combustion of propane?