November 2021 1 3 Report
осуществите химические превращения по таким схемам
а)Сu⇒CuO⇒CuCl2 ⇒Cu(OH)2
B)C⇒CO2⇒K2CO3⇒CO2
D)Fe2(SO4)3⇒Fe(OH)3⇒Fe2O3
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