October 2021 0 16 Report
Методом электронного баланса подберите коэффициенты в схемах взаимодействия металлов с концентрированной серной кислотой А) Cu+H2SO4=CuSO4=SO4+H2O
Б)Mg+H2SO4=MgSO4+H2S+H2O
В)K+H2SO4=K2SO4+S+H2O
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