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Stoichiometry Mass–Mole Stoichiometry

1

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12 g Mg reacts completely with excess acid: Mg + 2H⁺ → Mg²⁺ + H₂ Approximately how many moles of H₂ are produced?

Verified Answer & Explanation⌄

Correct Answer: B) 0.5 mol

Concept Explanation

12 g Mg ≈ 12/24 = 0.50 mol. Mg and H₂ have a 1:1 molar ratio. Therefore, H₂ produced ≈ 0.50 mol.

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