July 2022 1 5 Report
Поставьте степени окисления, укажите окислитель и восстановитель:
1) Fe + H2O = Fe(OH)2 + H2
2) 2Ca + O2 = 2CaO
3) 2Al + 6HCl = 2AlCl3 + 3H2 ⬆
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