April 2023 1 6 Report
Вилучи зайве» а) Na, K, Ba, S; б) CaO, Na2O, BaO, H2S; в) K2O, MgO, CuO, SO2; г) NaOH, Ca(OH)2, Zn(OH)2, H2SO4. Срочно ​
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