Запишите реакции превращений:1. Zn → ZnO → ZnCl2 →Zn(OH)2 → ZnO → Zn2. S → SO2 → SO3 → H2SO4 → Na2SO4.Подчеркните 1 чертой реакции соединения 2 чертами –реакции обмена
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