July 2022 1 8 Report
Помогите,пожалуйста:
Разбавленный водный раствор гидроксида калия при комнатной t (20 С) может реагировать с каждым веществом пары:
а)H2S и NaNO3
б)FeO и Fe2O3
в)MgCl2 и CuO
г)Al(NO3)3 и Сa(HCO3)2
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