reeee7080 reeee7080 06-04-2024 Chemistry contestada Which of the following reactions represents a combination reaction? (1) 2 H₂O → 2H₂+O₂(2) CaO+H₂O →Ca(OH)₂ (3) CaCO₃→ CaO + CO₂ (4) Both (1) and (3)