Answer:
0.5455
Explanation:
The moles of benzene in the process stream in 1 sec = 450 moles
The moles of toluene in the process stream in 1 sec = 375 moles
So, according to definition of mole fraction:
[tex]Mole\ fraction\ of\ benzene=\frac {n_{benzene}}{n_{benzene}+n_{toluene}}[/tex]
Applying values as:
[tex]Mole\ fraction\ of\ benzene=\frac {450}{450+375}[/tex]
Mole fraction of benzene in the process stream = 0.5455
