November 2021 0 9 Report
-уравнение какой химической реакции относится к обратимой 1- NaOH+KCI=NaCI+KOH
2- Na2SO3+H2SO4=Na2SO4+SO2+H2O
3- 2Ca+O2=2CaO
4- Fe+CuSO4=FeSO4+Cu
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