Ответ:
O2+2Ca=2CaO
CaO=O2+2Ca
O2+2H2=2H2O
2H2O=O2+2H2
Объяснение:
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Verified answer
Ответ:
O2+2Ca=2CaO
CaO=O2+2Ca
O2+2H2=2H2O
2H2O=O2+2H2
Объяснение: