Jawabanmu

2014-08-25T19:52:48+07:00
Dik : volume= 250 ml= 0,25 L
massa = 5gram
konsentrasi laruran [NaCl] = m/v
= 5/0,25
= 20 m
2014-08-25T20:10:16+07:00
K=massa terlarut:vol terlarut
=5 gram : 250 ml
= 5 gram :0,25 l=20g/l