Ответ по предмету Химия: Сполука з ковалентним полярним зв‘язком

Предмет: Математика, автор: tania271075

2 года назад

Предмет: Українська література, автор: martenslinda1

Образ людини, що протистоїть тоталітарній системі, створює у своєму творі
А М.Коцюбинський «Дорогою ціною»
Б І.Карпенко-Карий «Сто тисяч»
В В.Чемерис «Вітька +Галя…»
Г В.Дрозд «Білий кінь Шептало»

2 года назад

Предмет: Английский язык, автор: koryakovalmaty

At the start of the 20th century, a new city was beginning to grow on some flat land near the sea in southern California; its name was Los Angeles - the name of the old Spanish (1)mission that had been there for many years. At the same time, a new industry was just being born; the cinema, In America, they talked of "motion pictures", but this soon became shortened to "movies".
America's movie industry began life in New York; but by 1910, movie-makers were moving to Los Angeles, In New York, everything was too expensive; workers, land, taxes. Worse than that, it was difficult to make movies in winter, because it was too cold, (2)By contrast, the Los Angeles region was full of advantages. In California, they could make films all through the year; and everything was cheaper. In particular, there was lots of land for sale.
The movie-makers found what they needed a few miles outside Los Angeles; and before long, large new studios were being built in an area called Hollywood, at the foot of some small dry hills, Movies quickly became very popular, particularly after "talkies" first appeared in 1925. Nevertheless, movies were expensive to make, and film companies needed money - lots of it, For this reason, Hollywood rapidly became (3) dominated by a small number of big companies such as MGM, 20th Century Fox, Warner Bros, and Paramount. Since then, the big companies have had their (4) ups and downs, but most of them are still there. Some old names have disappeared, but some new ones have appeared, companies like Walt Disney and Steven Spielberg's company Amblin.(5)Naturally, Hollywood has changed a lot in 80 years! Today the biggest studios belong to huge international firms.
Task A Circle the word that can replace the underlined word without changing the meaning
1. monastery; statue; building; shop.
2. Furthermore; Additionally; On the other hand; Simultaneously.
3. liberated; depressed; controlled; undisciplined.
4. difficulties; happiness; satisfactions; gratifications.
5. Unsurprisingly; Nevertheless; Nonetheless; Moreover.

2 года назад

Предмет: Химия, автор: doctorjohndisco1963

Помогите, пожалуйста, с тестом по химии

1.Выберите пары атомов химических элементов, между атомами которых может образоваться ковалентная связь:

А. Н и Р;
Б. Fe и Fe;

В. Na и F;
Г. О и О;

Д. S и F;
Е. Са и О.

2. Найдите формулы ковалентных соединений:

А. LiF ;
Б. Br2;

В. CCl4 ;
Г. KCl ;

Д. BaO;
Е. SO2.

3. Выберите структурные формулы веществ:

А. О=С=О;
Б. :Cl:Cl:

В. К2S
Г. F---F

Д. :N: :N:
Е. H2

4. Электронные формулы веществ обозначены буквами:

А. PCl5
Б. H:P:H

В. N=N
Г.H-C-H

Д. H:H
Е. :С: :О:

5. Составьте схемы образования молекул:

А. азота;
Б. водорода.

6.Выберите формулы соединений с ковалентной полярной химической связью:

А. О3;
Б. КF;
В. Н2О;
Г. Р4;
Д. СF4.

7. Составьте схемы образования молекул:

А. фтороводорода НF;
Б. метана СН4.

8. Выберите символ химического элемента с наибольшей электроотрицательностью атомов:

А)О;
Б) В;
В) F;
Г)С;
Д) N.

8 лет назад

Предмет: Українська мова, автор: BogdanTitorov

1. Знайдіть складносурядне речення:
А) Двері тихо скрипнули й розчинилися, хоч він і не штохнув їх
Б) Грали два водевілі - один російський, другий український
В) Уже сонце скотилось до заходу, уже степова трава лисніла червоним одлиском
Г) Я бреду далі серед високих кущів, напоєних дощем, і вони зрошують мене все знову й знову

8 лет назад

Сполука з ковалентним полярним зв‘язком

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