1. Balanced Chemical Equation:

First, we need the balanced chemical equation for the combustion of C3H6 (propene):

2 C3H6 + 9 O2 → 6 CO2 + 6 H2O

2. Mole Ratio:

The balanced equation tells us that 2 moles of C3H6 react to produce 6 moles of CO2. This gives us a mole ratio of 2:6.

3. Calculate Moles of C3H6:

We can use this mole ratio to find the moles of C3H6 consumed:

* (4.11 mol CO2) * (2 mol C3H6 / 6 mol CO2) = 1.37 mol C3H6

Therefore, 1.37 moles of C3H6 will be consumed when 4.11 moles of CO2 are produced.