Какие степени окисления проявляет фтор в соединениях? Привести примеры соединений и охарактеризовать их.Проилюстрировать основные химические свойства этих соединенийуравнениями реакции.

Можно ли встретить ланцетника а Балтийском море? (да ,нет)а  в водоёмах вашей области? объясните свой вариант ответа

-2cos t=0 помогите пожалуйста!

Write a sentence with If for each situation.

2. He doesn't speak very clearly --that's why people don't understand him. If he --- more --- people ---

3. That book is too expensive, so I'm not going to buy it. If the book ---, I ---

4. We don't go out very often because we can't afford it.

5. It's raining, so we can't have lunch in the garden.

6. I have to work tomorrow evening, so I can't meet you.