October 2021 0 12 Report
Помогите расставить коэффициенты: 1)MnSO4+Br2+H2O=MnO2+HBr+H2SO4 2)KMnO4+NO2+H2O=HNO3+MnO2+KOH 3)KMnO4+HBr=MnBr2+KBr+Br2+H2O 4)NH4VO3+Zn+H2SO4+VSO4+ZnSO4+NH3+H2O
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