В 40 раз. наверно. только начали изучать
Dear,Max
Greetings from England.We're having great time here.The museums is very interesting.We are lucky with the weather.The sunshine everyday,but it's not very hot.Yesterday we had a cool day!We saw Big Ben!It's very long!
It's very beautiful here!We was in forest,we was in cafe.In cafe I ate pasta!
Write to me soon.
Take care,
Alex
CuSO₄+2NaOh ->Cu(OH)₂+Na₂SO₄
1 )2,3,4,4 -тетраметилпентан
2) 2,2- метилпропан
3)2-метилбутан
4)2,3 -дтэтилбутан
6)2,3-диметилбутан
Гомологи