October 2021 0 10 Report
Расставить коэффициенты в уравнениях. Подчеркнуть формулы сложных веществ. Определить типы химических реакций: а) CuCl2 + Zn = ZnCl2 + Cu б) H2 + Br2 = HBr в) Na2O + H2O = NaOH г) CH4 = C + H2
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