harrisononfire16731 harrisononfire16731 14-02-2024 Chemistry contestada Which of the following chemical equations is unbalanced? 1) SO₂ + H₂O → H₂SO₄ 2) 2Hg + O2 → 2HgO 3) Na₂O + H₂O → 2NaOH 4) 2H₂S + 3O2 → 2H₂O + 2SO₂