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Пожалуйста помогите с заданием:
"Расположите вещества в порядке возрастания полярности связи: H2O,
CH4, HF, NH3. Укажите тип химической связи в каждом веществе, постройте
графические формулы."-
Предмет:
Химия -
Автор:
minnie2lql - 5 лет назад
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Ответы 1
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Вещества в порядке возрастания полярности связи:
CH4 => NH3 => H2O => HF
Во всех представленных молекулах фигурирует только ковалентная полярная связь.
Графические формулы прилагаются в изображении.
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Автор:
lacey100 - 5 лет назад
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0
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ПОМОГИТЕ!!! ДАЮ 17 БАЛОВ!!!!
Task 1. Read the passage and answer the questions 1-5 (only one answer is
щ possible).
-§• THE INTERNET • Did you ever think of how the Internet started? In the 1960s the US government had the idea to
rj connect some of its computers together. That way, the computers could exchange information. Scientists
spent several years working on the project. It was difficult, because computers in different places
^ had never been connected together before. Finally, in 1969 four computers were connected with help
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Я had to type in complicated codes.
щ In 1991, the World Wide Web was created. It helped make the Internet easier to use. But people still
• had to know some codes. In 1992 a new computer program Mosaic was invented. People no longer had
^ to know codes to use the World Wide Web. The new program let people click on words and pictures.
a Then almost anyone could use the Internet.
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В 1955
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