Предмет: Химия, автор: кискк

Ребята помоги в химией: Решите задачу:
Вычислить массу натрия, вступившего в реакцию с медным купоросом массой в 20 грамм...Заранее большое спасибо

Ответы

Автор ответа: ФизикТеоретик
0
Натрий не реагирует с медным купоросом
Автор ответа: кискк
0
спасибо)))
Автор ответа: кискк
0
напиши, пожалуйста, 10 названий солей щелочных металлов
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Cinema

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Questions:
1. How do lots of people find going to the cinema?
2. Who makes up the movie audience?
3. Why have cinema attendances declined sharply?
4. Is the cinema-going habit still a strong one?
5. What genres of feature films are there?
6. How many performances have many cinemas a day?
7. What films have cinema screens in this country been dominated by?
8. Are you fond of going to the cinema?
9. In what time do we live now?
10. What do you give your preference to?
11. What does the film you saw last tell?
12. What is an essential feature of American films?

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На рисунке изображен график функции y=f(x), определенной на промежутке [−4;4]. Пользуясь графиком, найдите сумму значений f(2,5) и f(−1) и запишите ее в ответ.


рисунок.png

рисунок.png
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