8 класс - Химия - Определение формулы вещества по массовым долям элемента
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![[LE PIRE] - On visite le ZOO de la politique Française !](https://sun9-21.userapi.com/uTNDfR1XITtwQnEm3wOeK_VXkiK6CQf7475V2A/Di36OvmGtjs.jpg)
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