Jawabanmu

2014-04-16T10:29:46+07:00
QAB + QBC = (m.c. ΔT) + (m.L)
QAB + QBC = (0,2 x 2100 J x 10) + (0,2 x 340.000 J)
4200J + 680000J 
= 72.200 J