Conversion factors can be generated based on a balanced chemical reaction. For the
reaction below, identify which conversion factor (equality) is not valid:
C(s) + O2(g) → CO2(g)

A: 1 mole CO₂ = 1 mole C
B: 1 mole CO₂ = 1 mole O2
C: 1 mole C = 1 mole O2
D: 2 moles O₂ = 1 mole CO2