Неорганическая химия. Металлы главных подгрупп. Часть 1 | Длительность: 25:04 | Просмотры: 501
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1) 00:00 Окраска пламени солями щелочных и щелочноземельных металлов 2) 05:58 Взаимодействие натрия с серой 3) 09:18 Вз...
Автор: Видеопособия для школьников | Просмотров: 501 | Длительность: 25:04
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