The minimum amount of O₂(g) consumed per gram of reactant is for the reaction (Given atomic mass: Fe = 56, O = 16, Mg = 24, P = 31, C = 12, H = 1)
- AC₃H₈(g) + 5O₂(g) → 3CO₂(g) + 4H₂O(l)
- BP₄(s) + 5O₂(g) → P₄O₁₀(s)
- C4Fe(s) + 3O₂(g) → 2Fe₂O₃(s)
- D2Mg(s) + O₂(g) → 2MgO(s)
✓ Correct answer: C
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