Answer:
(NH₄)₂CO₃ (aq) + MgSO₄(aq) → (NH₄)₂SO₄(aq) + MgCO₃ (s) ↓
Explanation:
We determine the reactants:
(NH₄)₂CO₃ → Ammonium carbonate
MgSO₄ → Magnesium sulfate
We determine the products:
(NH₄)₂SO₄ ; MgCO₃
All the salts from carbonates are precipitates:
(NH₄)₂CO₃ (aq) + MgSO₄(aq) → (NH₄)₂SO₄(aq) + MgCO₃ (s) ↓
Ratio is all 1:1. 1 mol of ammonium carbonate reacts to 1 mol of magnessium sulfate in order to produce 1 mol of ammonium sulfate and 1 mol of magnessium carbonate.