July 2021 0 7 Report
Среди приведенных схем химических реакций к реакциям разложения относится      1) Cu + Н 2SO4 (конц.)  = CuSO4 + Н 2O + SO2  2) HgO =  Нg + O2      
3) Н2 + O2 = Н 2O      
4) FеО + НСl = FеСl2 + Н 2O
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