Даны вещества:NaBr,K2SO4,H2SO4,AICI3,AI2O3,ZnS,ZnCL2,K2O,NaOH,Ba(NO3)2. Используя толко эти вещества,получите ? А)сульфат калия Б)сульфат амолиния В)гидроксид цинка
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