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Stoichiometry Mole–Mass Stoichiometry

1

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1.5 mol O₂ reacts completely with Mg: 2Mg + O₂ → 2MgO What mass of Mg is consumed?

Verified Answer & Explanation⌄

Correct Answer: A) 72 g

Concept Explanation

1 mol O₂ requires 2 mol Mg. 1.5 mol O₂ requires 3 mol Mg. Using Mg ≈ 24 g mol⁻¹: Mass = 3 × 24 = 72 g.

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