suatu larutan terdiri dari campur 60 gr CO (NH2)2 mr=60 dan 72 gr air mr=18. tentukan fraksi mol urea

n urea = m/Mr = 60/60 = 1 mol
n air = m/Mr = 72/18 = 4 mol
X urea = n urea/ n total = 1/5 = 0.2

note = X = fraksi mol