In the reaction N₂ + 3H₂ → 2NH₃, how many moles of H₂ are needed to produce 4 mol of NH₃?
Correct answer D. 6 mol
Explanation
The mole ratio H₂ : NH₃ is 3 : 2. Moles of H₂ = 4 mol × 3/2 = 6 mol.
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