Question

Exercitiul 3
nu am inteles prea bine 2,1 g sau 1,2 g aici nu sunt sigura

Answer 1

m/M=V/Vm=>M=m*Vm/V=1,33*22,4/0,532=56g/mol

n=m/M=2,1/56=0,0375 moli CxHy

44g CO2........................12g CO2
6,6g CO2........................x=1,8g C

mH=2,1-1,8=0,3g H

n=m/M=1,8/12=0,15 moli C

n=m/M=0,3/1 = 0,3 moli H

0,0375 moli CxHy.............0,15 moli C............0,3 moli H
1 mol..................................x=4 atomi C..........y=8 atomi H

F.M => C4H8 - butena