Match the correct mole ratio of O2 to CO2 to the reactions by dragging the tiles on the left to the correct reaction on the right. Drag the items on the left to the correct location on the right. Correct 2:1 Correct 7:4 Correct 5:3 Correct 13:8 Correct 5:4 C3H8 + 5O2 → 3CO2 + 4H2O 2C4H10 + 13O2 → 8CO2 + 10H2O CH4 + 2O2 → CO2 + 2H2O 2C2H2 + 5O2 → 4CO2 + 2H2O 2C2H6 + 7O2 → 4CO2 + 6H2O