A) 397600
19. (v12c-202-4) 5,6 g etenning polimerlanishidan hosil bolgan namunada 7,207-Р®20 ta makromolekula bor.
Reaksiyaga kirishmagan eten 100 g 3,16% li KMn04 ning suvni rangsizlantiradi. Polietilenning ortacha molekulyar massasini toping.
A) 397600 B) 397,6
C)3976 D)39760