August 2022 1 3 Report
Укажите химическую реакцию,которая относится к реакциям соединения:
А)NaOH+CuSO4=Cu(OH)2+Na2SO4
Б)CuSO4+Fe=FeSO4+Cu
B)H2+O2=H2O
Г)CaCO3=CaO+CO2;
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