Не могли бы с химией , органика ?
12 , 14 , 15 , 16 , 21 , 22 , 23 , 24 ​

12. C6H6 + CH2=CH2 = C6H6-CH2-CH3

14. CH2=CH-CH3 + C6H6 = C6H5-CH2-CH2-CH3

15. CH2=CH-CH3 + HCL = CH3-CH(CL)-CH3

16.CH2=CH-CH3 + H2O = CH3-CH(OH)-CH3

21. 3 CH2=CH2 + 2 KMnO4 +4 H2O = 3 CH2(OH)-CH2(OH) + 2 MnO2 + 2 KOH

22. (CH2-CH2)n

23. 2C2H5OH = CH2=CH-CH=CH2 + 2H2O + H2

24. (CH2-CH(CH3))