September 2021 0 9 Report
Какое уравнение соответствует реакции соединения? 1) К2СО3+2НСl=2KCl+CO2+H2O
2) Fe2O3+3H2=2Fe+3H2O
3) CaCO3+CO2+H2O=Ca(HCO3)2
4) 4HNO3=4NO2+O2+2H2O
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