December 2021 0 5 Report
Определите методом электронного баланса коэффициенты в уравнениях окислительно-восстановительных реакций: Cu2S + HNO3 = Cu(NO3)2 + H2SO4 +NO2 + H2O

KMnO4 + NaNO2 + H2SO4 = MnSO4 +NaNO3 + K2SO4 + H2O
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