consider the equation 2 C₃H₆(g) + 9 O₂(g) → 6 CO₂(g) + 6 H₂O . if 3 moles of C₃H₆ reacts with 7 moles O₂ what is the limiting reactant?
O C₃H₆
O O₂
O CO₂
O H₂O