CH(тройная связь)C-CH2-CH2-CH2-CH3+Br2------->СHBr=CBr-CH2-CH2-CH2-CH3
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При прокаливании 25 г. карбоната кальция образуется углекислый газ объемом(н.у.) :
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ХимияАвтор:
lashonsc3qОтветов:
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в окружности с центром О АС и ВD-диаметры.Угол АСВ равен 35 градусов .Найдите угол AOD.Ответ дайте в градусах
Необходимо задать 5 вопросов разного типа по тексту: общий, разделительный, альтернативный, специальный и вопрос к подлежащему From time immemorial Kiev has been the centre of Slavonic culture. The Ukrainian culture is famous for its rich ancient traditions. The names of Taras Shevchenko, Lessya Ukrainka, Ivan Frako and others won the universal recognition. There’s hardly a country in the world which hasn’t translated Taras Shevchenko poems into its language. Gentle melodies and deep emotions of Lessya Ukrainke’s verses are dear to poetry-lovers all over the world. Ukraine has also given the world many brilliant scientific minds, for example Vernadsky, Zaboloty, Bogomolets, Sklifososky. Amosov and Filatov are the two outstanding figures in the national medicine. No less known Boris Paton, President of the Ukrainian Academy of Scienses. Ukraine actively takes part in the world’s cultural progress. The Ukrainian orchestars, folk-music performers, pop and opera singers, ballet dancers visit different countries every year and are warmly met abroad. The Ukrainian national composer school is connected with the name of Mikola Lysenko, who developed the traditions of the famous Ukrainian composers Gulak-Artemovsky and Sokalsky. M. Lysenko operas “Taras Bulba”, “Natalka Poltavka”, “Eneida” are still staged at the world’s opera-houses. At the end of the last century several painting schools were formed in Kiev, Odessa and Kharkov. They united such prominent Ukrainian artists as Murashko, Kostandi, Pimonenko and others. Among the modern painters the names of Yablonska, Khmelko, Yakutitch are best kown. The Ukrainian culture has always developing humane traditions of the mankind as the only everlasting values of all times and peoples.
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вычислить площадь фигуры ограниченной линиями: y=x^4, y=0, х=2