molecular weight of toluene = 92 g/mol
C6 = 12 x 6 = 72
H5 = 1 x 5 =5
CH3 = 12 + 1 x 3 =15
molecular weight of benzene = 78 g/mol
C6 = 12 x 6 = 72
H6 = 1 x 6 = 6
moles toluene:
115.8 / (92 g/mol) = 1.25 mol
moles benzene:
45.2/ (78 g/mol) = 0.57mol
total moles: 1.25 + 0.57= 1.82 moles
mole fraction of toluene:
1.25 mol / 1.82 moles = 0.68
