Jawabanmu

2014-08-19T13:53:06+07:00
Urea,COC(NH2)2,jika nilai kb air=0,52C (Ar c=12;0=16;N=14;H=r) maka hitunglah titik didih dan titik beku
1 5 1
2014-08-19T15:01:05+07:00
Mr urea 60
m:gr/Mr×1000/P
=12/60×1000/250
=0,8

ΔTb= kb×m
= 0,52×0,8
= 0,416

Tb= 100+ΔTb
=  100+0,416
= 100,416C