Jawabanmu

2014-04-28T23:24:34+07:00
Q = m x C x perubahan suhu
    = 0,2 x 2100 x (0-(-5))
    = 420 x 5
    = 2100 j / 2,1 kj
2014-04-28T23:48:26+07:00
Qlebur es=m×delta t=0,2×34000×5=34000J