Химия ЕГЭ, групповой зачет, W8 Про, Филина, Хамхоев (4 месяц)
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![🧪 Почему чай светлеет от лимона? | Выделил КОФЕИН из чая | Химбио блог №15 [Репич]](https://sun9-46.userapi.com/KMoALTZ5HLkO3lKvbp5N9ujWvFTnjqip82V20A/QwsMQHErPh0.jpg)
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