Предмет: Химия, автор: Настькаса

какую массу имеет натрий 2 количеством 0.3 моль

Ответы

Автор ответа: Shrpvlr

0

m(Na) = 0,3* 23 = 6,9 г

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Task 1. Read the text

Living in the city has both advantages and disadvantages. From one hand, it is always easier to find a good job or to visit interesting places and exhibitions. There is also a good choice of public transport. From the other hand, the noise and pollution level in big cities is really high. As for me, I quickly become tired af it. Living in the city is very interesting. There are a lot of interesting things to do and places to see. For example, you can eat in a good restaurant, visit museums and go to the theatre or to concerts. When you want to relax, you can go to a park and just sit on a bench and read a book. The city life is full of bustle and variety, and you don't need to feel bored. But living in the city is often more expensive than in the country. It is difficult to find a good and cheap accommodation. Besides, public transport is often dirty and crowded, especially in the rush hour. For me the life in the country is wonderful - all this fresh air and the singing of the birds! What I like most about the country is that everyone knows everyone else, and they are friendly, In the city if you live in a block of flats, like me, you can be there for years and never even get to know your neighbors. There are some in my black I've never seen. There is a lot more crime and violence in the city than in the country.

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2. People are not friendly in the city.

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