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25-12-2022
Chemistry

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Задание 4. Определите процессы - окисление и восстановление:
A) S-2 + 8e → S+6
Б) znº - 2e → Zn+2
B) Cº - 2 e → Cu+4
Г) 2O2 + 4 e → O2°
Д) 21-¹ - 2 е →12°

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