Ответ:
№3
2Ca+O2 → 2CaO
2Na+Cl2 → 2NaCl
2Cu+O2 → →2CuO
2Al+3S → Al2S3
2Al+3Cl2 → 2AlCl3
Zn+Cl2 → ZnCl2
2H2+O2 → 2H2O
6Li+N2 → 2Li3N
2Al+3H2 → 2AlH3
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Ответ:
№3
2Ca+O2 → 2CaO
2Na+Cl2 → 2NaCl
2Cu+O2 → →2CuO
2Al+3S → Al2S3
2Al+3Cl2 → 2AlCl3
Zn+Cl2 → ZnCl2
2H2+O2 → 2H2O
6Li+N2 → 2Li3N
2Al+3H2 → 2AlH3