Practice question
Question
What is the mass of water produced when 8 g of CH₄ reacts with 24 g of O₂? (Atomic masses: C = 12, H = 1, O = 16)
Explanation
Reaction: CH₄ + 2O₂ → CO₂ + 2H₂O. Moles: CH₄ = 0.5 mol, O₂ = 0.75 mol. O₂ limits at 0.375 mol CH₄. 0.375 mol CH₄ produces 0.75 mol H₂O = 13.5 g.
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