4 Cu + O₂ → 2 Cu₂O
3 MgO + 2 H₃PO₄ → Mg₃(PO₄)₂ + 3 H₂O
2 Al(OH)₃ → Al₂O₃ + 3 H₂O
Ba(OH)₂ + 2 HCl → BaCl₂ + 2 H₂O
2 Na + 2 H₂O → 2 NaOH + H₂
Al₂O3 + 6 HCl → 2 AlCl₃ + 3 H₂O
3 K₂O + P₂O5 → 2 K₃PO₄
3 Ca(OH)₂ + 2 H₃PO₄ → Ca₃(PO₄)₂ + 6 H₂O
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4 Cu + O₂ → 2 Cu₂O
3 MgO + 2 H₃PO₄ → Mg₃(PO₄)₂ + 3 H₂O
2 Al(OH)₃ → Al₂O₃ + 3 H₂O
Ba(OH)₂ + 2 HCl → BaCl₂ + 2 H₂O
2 Na + 2 H₂O → 2 NaOH + H₂
Al₂O3 + 6 HCl → 2 AlCl₃ + 3 H₂O
3 K₂O + P₂O5 → 2 K₃PO₄
3 Ca(OH)₂ + 2 H₃PO₄ → Ca₃(PO₄)₂ + 6 H₂O