3Fe+4H²O=Fe³O⁴+4H²
Zn+2HCl=H²+ZnCl²
2NaBr+Cl²=2NaCl+Br²
Ca+2HCl=CaCl²+H²
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3Fe+4H²O=Fe³O⁴+4H²
Zn+2HCl=H²+ZnCl²
2NaBr+Cl²=2NaCl+Br²
Ca+2HCl=CaCl²+H²