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Химия
Напишите химические реакции и уравняйте их с помощью коэффициентов: А) магния + кислород → оксид магния; Б) водород + азот → гидрид азота (III)↑; В) фосфор + кислород → оксид фосфора (V); Г) натрий + сера → сульфид натрия.-
Предмет:
Химия -
Автор:
oliverl643 - 6 лет назад
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Ответы 1
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а) 2Mg+O2=2MgOВ)4P+5O2=2P2O5Г)2Na+S=Na2Sпод б я не помню, сорри
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Автор:
skylaryq6v - 6 лет назад
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0
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Помогите пожалуйста по английскому языку. Задания 11,12,13.
To the west of the continent of Europe lie two large islands. The larger of them is called Great Britain, and the smaller, Treland. These two and 5,500 smaller islands form the British Isles.The island of Great Britain consists of England, Scotland and Wales. The isle of Ireland is divided into Northern Ireland and the Irish Re- public. England, Scotland, Wales and Northem Ireland form the Unit ed Kingdom of Great Britain and Northem Ireland. The UK (the United Kingdom) is the official name of the country, occasionally referred to as Great Britain, which is, strictly speaking, only a geographic name Great Britain is washed by the Atlantic Ocean and the Irish Sea from the west, by the North Sca fion the north and west. It is separated from the European continent by the English Channel. The narrowest part of the English Channel is called the Strait of Dover. The UK is not a very large country. Its territory is about 244,000 square kilometers and no point of the country is more than 120 kilometers away from the sea At the same time, the population of the UK is the third largest in Europe, comprising about 60 million people. It is incorrect to call ev erybody who lives in the United Kingdom "English", as this is the name only for those who live in England. The residents of Wales are named Welsh, while the people of Scotland are called Scottish. The correct common naime for English, Scottish and Welsh is British Those who live in Northern Ireland are called Irish The climate of the British Isles is generally mild; it is seldom cold in winter and never too hot in summer. This is due to the warm current of the Atlantic Ocean, Gulf Siream. Britain was always known as the country of fogs, but now it is not quite so because of the climatic changes: there is maybe less fog than in any other European ountry There are no high mountains and long rivers in the UK. The highest mountain is Ben Nevis in the Highlands of Scotland, and the longest rivers are the Severn and the Thames. Geographically, the UK has a very convenient position, being locat- ed on the crossroads from Europe to America. This is one of the rea- sons why Britain was (and is up to the present time) one of the leading world powers. The capital of the country is London. It is situated on the river Thames Britain has an ancient and glorious history. It used to be the great empire "where the sun never sets". It gave the world many famous scientists, writers, political leaders and explorers, such as Newton, Dar- win, Drake, Shakespeare, Churchill and others. For centuries monarchs ruled Britain. The constitutional monarchy is still preserved in the country, though it practically no more thana tradition and a tribute to the past. Queen Elisabeth II is Head of St Her power is limited by the parliament, which is elected every four years. The leader of the party that has won the majority during the elections becomes the Prime Minister. In fact, lhe becomes tate and forms the Cabinet. The Opposition the head of-
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robertuimw - 6 лет назад
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