Pentacarbonyliron(0) (Fe(CO)5) reacts with phosphorous trifluoride (PF3) and hydrogen, releasing carbon monoxide: Fe(CO)5 + 2PF₃ + H₂ → Fe(CO)₂ (PF₃)₂ (H)₂ + 3CO If 6.0 g of Fe(CO)₅ reacts with 4.0 g of PF₃ and 4.0 g of H₂, which is the limiting reagent?