December 2021 0 21 Report
Закончите уравнения следующий реакций: а) H2SO4 + Mg =
б) H2SO4 + Zn =
в) SO3 + K2O =
г) H2SO4 + BaCl2 =
д) H2SO4 + K2S =
е) SO2 + Na2O =
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