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Limiting Reagent Basics
If 10 g of hydrogen reacts with 80 g of oxygen to form water, which reactant is limiting?
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Sep 01, 2025
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Reaction: 2H₂ + O₂ → 2H₂O. Moles of H₂ = 10/2 = 5 mol; O₂ = 80/32 = 2.5 mol. O₂ runs out first → Oxygen is the limiting reagent.
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