The balanced chemical equation for the combustion of C3H8 is:
C3H8 + 5O2 → 3CO2 + 4H2O
According to the equation, for every 1 mole of C3H8 that is burned, 3 moles of CO2 are produced.
Therefore, to find the number of moles of CO2 produced from the combustion of 6.4 mol of C3H8, we can use the mole ratio from the balanced equation:
6.4 mol C3H8 × (3 mol CO2 / 1 mol C3H8) = 19.2 mol CO2
So, 19.2 moles of CO2 are produced from the combustion of 6.4 mol of C3H8.