July 2022 1 5 Report
Какие вещества называют оксидами и как их классифицируют?Из перечня выпишите кислотные оксиды и основные: Na2O,N2O5,SiO2,CaO,CrO,CrO3,CuO,Mn2O7,FeO,SO2.
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