August 2022 2 22 Report
Укажи уравнения реакций обмена.

Может быть несколько вариантов ответа.

Fe+S=FeS

2KOH+FeS=Fe(OH)2+K2S

Ca+2H2O=H2↑⏐+Ca(OH)2

2KOH+FeSO4=Fe(OH)2+K2SO4

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