Choose the Reaction That Illustrates ΔH°_f for Mg(NO₃)₂

question 7

Multiple Choice

Choose the reaction that illustrates ΔH°_f for Mg(NO₃) ₂.

• A) Mg(s) + N₂(g) + 3O₂(g) → Mg(NO₃)₂(s)
• B) Mg²⁺(aq) + 2 NO₃^-(aq) → Mg(NO₃)₂(aq)
• C) Mg(s) + 2 N(g) + 6 O(g) → Mg(NO₃)₂(s)
• D) Mg(NO₃)₂(aq) → Mg²⁺(aq) + 2 NO₃^-(aq)
• E) Mg(NO₃)₂(s) → Mg(s) + N₂(g) + 3O₂(g)

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