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написати структурні формули наступних речовин : а)2,2,3- триметил, 4 - хлор пентал) б) 2 - етил, 2,4 - дибутил,гексан
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спасибо большое))
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Автор:
lilianainvl - 5 лет назад
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0
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Пожалуйста !
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Автор:
major75 - 5 лет назад
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)))))))))))))))))))))))))))))))))))))))))))
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Автор:
ruffecosta - 5 лет назад
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0
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Пила, Спала, Плакат, Рой, Грела, Прочь,Ночь, Печь, Село ,Мою, Плакат, Шакал ,Вал, Крепость, Мыло ,Напрочь.
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They say that appearances are important. On the one hand, this is true, on the other, this is not quite right. A handsome man or a pretty woman can have very unpleasant traits of character and the opposite. However, there are exceptions, of course!
I want to tell you about my sister, Katya. In primary school she didn't look very pretty. She had freckles, red wavy hair and was wearing glasses. All this made her clumsy and shy. Since that time her appearance has changed very much, but her character has remained the same. She has grown up into a very pretty girl. She is of a medium height, slender and well- proportioned. Her hair has got darker into a chestnut shade. She wears it long to her shoulders. Her face has soft features, her freckles have disappeared, but her complexion remains pale as before. Instead of glasses she wears contact lenses, which allow her sparkling hazel-green eyes to shine. She has a small straight nose and a rather wide mouth but her enchanting smile shows her white teeth and makes her face look charming. No one can say that her gestures are clumsy any more.
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