Consider the following reaction. How many moles of oxygen are required to produce 3.00 moles of carbon dioxide? Assume that there is excess C3H7SH present.
C3H7 SH(I) + 6 O2(g) - 3 CO2(g) + SO2(g) + 4 H2O(g)
According to the balanced chemical equation, 6 moles of oxygen are required to produce 3 moles of carbon dioxide.
So, if we want to produce 3.00 moles of carbon dioxide, we will need 6.00 moles of oxygen.