Предмет: Химия, автор: gurovi074

скільки молекул містить порція води кількістю речовини 3 моль? ​

Ответы

Автор ответа: Соцэконом
2

есть число Авогадро = 6,022 140 76⋅10^23

это вот столько молекул в одном моле чего угодно

ну и в трёх молях будет 18,066⋅10^23 молекул

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Diferent Kinds of English

In the 16th century the people who lived in Europe did not know English.
They couldn't understand English words. Only those who lived on the island called Great Britain, spoke English. English was useless for the people of the continent. In those years Latin, French, German and Italian were popular and widely known.

Four hundred years later the speakers of English travelled into every corner of the globe carryng their language and culture with them. Today English is more important than any other language has ever been. It has become the language of the planet, the first truly global language. Of all the world's languages it is probably the richest in vocabulary. Now it is the language of technology and science, business and sport. English is the official language of the Olympics, the official voice of the air and of the sea.
People use English as the first language in English-speaking countries such as Britain, the USA, Canada, Australia and New Zealand. It has become the second language in countries like India, Nigeria and Singapore. Then there is English as a foreign language.
People teach and learn English as a foreign language in Europe and Asia, in Africa and South America, in other words, all over the world.
But English is not the same everywhere. Several kinds of English have appeared. They are American English, Canadian English, Australian English, etc. People who live in Britain speak British English.