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Stoichiometry Mass–Volume Stoichiometry

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What volume of O₂ at STP (273 K and 1 atm) is required for complete combustion of 96 g CH₄? CH₄ + 2O₂ → CO₂ + 2H₂O

Verified Answer & Explanation⌄

Correct Answer: C) 268.8 dm³

Concept Explanation

96 g CH₄ = 96/16 = 6 mol. O₂ required = 6 × 2 = 12 mol. Volume = 12 × 22.4 = 268.8 dm³.

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