ответ:1:
2Mg+O₂-->2MgO
2:
MgO+2HCl--->MgCl₂+H₂O
MgO + 2H⁺ + 2Cl⁻ --->Mg²⁺ + 2Cl⁻ + H₂O
MgO + 2H⁺ --->Mg²⁺ + H₂O
3:
MgCl₂+2NaOH--->Mg(OH)₂↓+2NaCl
Mg²⁺ + 2Cl⁻ + 2Na⁺ + 2OH⁻ --->Mg(OH)₂↓ + 2Na⁺ + 2Cl⁻
Mg²⁺ + 2OH⁻ --->Mg(OH)₂↓
4:
Mg(OH)₂--[t]-->MgO+H₂O
5:
MgO+H₂SO₄--->MgSO₄+H₂O
MgO + 2H⁺ + SO₄²⁻ --->Mg²⁺ + SO₄²⁻ +H₂O
MgO + 2H⁺ --->Mg²⁺ + H₂O
Объяснение: просто напросто
I DON'T KNOW WHAT I CAN DO YOU HAVE
