Оценка:
Опубликованно: 04.05.2006.
Язык: Английский
Уровень: Средняя школа
Литературный список: Нет
Ссылки: Не использованы
  • Эссе 'Chlorofluorocarbons', 1.
  • Эссе 'Chlorofluorocarbons', 2.
Фрагмент работы

Chlorofluorocarbons (CFCs) are a very present gas in our modern day world. Discovered by Thomas Midgley, an organic chemist at General Motors Corporation in 1920. He was looking for inert, non-toxic, non-flammable compounds with low boiling points that could be used as a method of cooling. Chlorofluorocarbons are now essential tools needed for various house hold utilities, they can be found in air conditioners, refrigerators, spray cans and other common items. …

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