Răspuns:
formula alcanului CnH2n+2
masa molara aalcanului miu= 14n=2
14n+2galcan..........12n g C
100g.............................81,81gC
1200n= 81.81(14n+2)----> n=3--------> C3H8 propan
CH3-CH2-CH3----> CH2=CH-CH3(propena)+ H2 80%
nCH2=CH-CH3 ----> [-CH2-CH-]n 90%
l
CH3
nx44g propan.......nx42g propena.......nx42g polimer
1650g........................................................x
x=1575g masa teoretica
masa practica m= 1575x80/100x90/100g=1134g polimer
Explicație:
