Назовите вещества
a) ch3-ch-ch-ch3
| |
ch3 c2h5

б) ch3-ch2-ch-ch2-ch2-ch3
|
c2h5

в) ch3
|
ch3-c-ch3
|
ch3

f !

rusakova09    2   23.11.2019 12:16    1