10 класс.
Помогите, файл прикреплен.

CH3-CH2-CH2-CH3+Br2->CH3-CH2-CHBr-CH3+HBr
CH3-CH2-CHBr-CH3+KOH->CH3-CH2-CH=CH2+KBr+H2O
CH3-CH2-CH=CH2+HOH->CH3-CH2-CHOH-CH3
CH3-CH2-CHOH-CH3->CH3-CH=CH-CH3+H2O
3CH3-CH=CH-CH3+2KMnO4+4H2O->3CH3-CHOH-CHOH-CH3+2MnO2 +2KOH