Jawabanmu

2014-08-12T22:11:29+07:00
Mr = 180
Tf = - 2,4
ΔTf = 2,4
kf = 1,86
kalau pelarutnya air ya ( ml = 1000 ml. ms =1 kg)
ΔTf = Kf m
2,4 + 1,86 x m
m = 1,3

m = ms\mr x 1000/1000
1,3 = m/180
ms = 234

% = 234/1234 x 100% = 18,96 %