назовите вещества:
CH3
|
1) CH3 - CH2 - C - CH2 - CH3
|
C2H5

ch3
|2)ch3-ch-c-ch2-ch2-ch2-ch3
| |
ch3ch3

3)ch3-ch2-ch2-ch-ch-ch3
| |
ch3 ch3

​

Margo11111122223332    1   12.05.2020 16:25    1