Phosphine, PH₃, a Reactive and Poisonous Compound, Reacts with Oxygen

Multiple Choice

Phosphine, PH₃, a reactive and poisonous compound, reacts with oxygen as follows: 4PH₃(g) + 8O₂(g) → P₄O₁₀(s) + 6H₂O(g) If 9.2 moles of phosphine react with sufficient oxygen, how many moles of P₄O₁₀ should form?

A) 4.0 moles
B) 9.2 moles
C) 37 moles
D) 2.3 moles
E) 6.0 moles