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FA sugh
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Experiment to show the presence of water of crystallization in a salt. 1).
Dry crystals of copper sulphate in the test-tube are heated. The colour of poly
crystals before heating is dark blue. When they are heated, the dark blue col fu
fades and the crystals turn white. At the same time, a colourless liquid is colles
in the water-cooled tube. If the boiling-point and freezing-point of this liquid y
measured, they are found to be the same as for water. If water is added to the s
dry white copper sulphate crystals, they turn blue and much heat is produced. 1
shows that blue copper sulphate crystals contain water, which is removed wheer
crystals are heated.
1) Describe the apparatus used in this experiment.
2) What is the colour of the crystals before heating?
3) What happens when they are heated?
4) What tests are carried out with the liquid which is collected?
5) What do the tests show?
6) What can be done to the cold dry white copper sulphate crystals?
7). What happens when this is done?
10​

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Ответ:
yogurtq2018
yogurtq2018
22.01.2021 17:01

Seoul is the capital of Korea. This is a major political, economic and cultural center of the country. It's one of the leading financial centers in East Asia. There are many sightseeings that are very popular for tourists.
 For example, a Complex of Gyeongbokgung Palace, which was built in 1394, when Khanyan was proclaimed as a new capital of the country. Changdeokgung, built in 1405, is located to the East of the main Palace. The tomb of king Sanjana is one of the religious buildings in Seoul – the burial of king Songone of the XV century. 
There are more than 110 museums in the city. The main contemporary art Museum opened in Gwacheon in Seoul is valid only the branch close to gyeongbok Palace.
I dream to visit this city and I think that one day I'll see it with my own eyes.


Сеул - столица Кореи. Это важный политический, экономический и культурный центр страны. Это один из ведущих финансовых центров в Восточной Азии. В городе есть много достопримечательностей, которые очень популярны среди туристов.

Например, комплекс Дворца Кенбоккун, построенный в 1394 году, когда Ханьян был провозглашен новой столицей страны.  Чхандоккун, построенный в 1405 году, расположен к востоку от главного Дворца. Гробница царя Саньяна – одно из самых культовых зданий в Сеуле – захоронение царя Сангона  XV века.

В городе насчитывается более 110 музеев. Главный музей современного искусства открыт в в Сеуле действует только в филиале рядом с Дворцом Кенбоккуна.

Я мечтаю посетить этот город, и я думаю, что однажды я увижу его собственными глазами.

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Ответ:
Влад32321
Влад32321
04.04.2020 20:52
Saint-Petersburg is often called a northern capital of Russia. And it is recognized as a city of special importance by The Russian Constitution. There are only two cities of special importance in Russia – Saint-Petersburg and of course Moscow. No doubt Saint-Petersburg deserves such a status.
The name of the city changed several times. At first the city was called Saint-Petersburg but it was renamed to Petrograd in 1914. Then in 1924 just after the death of Lenin the city was given the name Leningrad. In 1991 the old name Saint-Petersburg was given back to the city.
In the cultural capital Saint-Petersburg you’ll find a lot of museums, monuments and cathedrals. The most famous museum of world importance is of course the Hermitage. The works of arts collection of the Hermitage was started with Ekaterina’s (Cathrine) purchase of 225 pictures made by masters from Western Europe. Today the museum has about three million exhibits. Just imagine! You’ll need 15 years to see all the exhibits of the Hermitage having a minute looking at each of them and spending 8 hours a day on that. Besides each hall itself is a work of art. Malachite, George and Peter halls are very popular among tourists.
The theatres of Saint-Petersburg are also very famous all over the world. You’d better book the tickets because there are always lots of people interested in theatre. The Maryynsky theatre is magnificent. Here you can take in the pleasure of wonderful opera and unforgettable ballet. Lots of really great people worked and still work in the Maryynsky theatre. And magnificent furniture will take you back to the times of Peter I and Ekaterina II.
You can fall in love with Saint-Petersburg. Having come to this city once you want to come back here again and again. You'll especially like it if you visit Saint-Petersburg at the end of May or at the start of June. It’s right the time of white night here. That means it’s not dark at night. Such a geographical singularity. And besides the weather here is very warm and sunny in this period of time.
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