July 2021 0 9 Report
Расставьте коэффициенты методом электронного баланса 1. H2S+HNO3=S+NO+H2O
2. Cа3(PO4)2+C+SiO2=CaSiO3+P+CO
3. FeCl2+KMnO4+HCl=FeCl3+MnCl2+KCl+H2O
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