Jawabanmu

2014-04-30T11:06:05+07:00
Qabcd=Qab+Qbc+Qcd =mxcxdeltaT+mxL+mxcxdeltaT =500x0,5x10+500x80+500x1x5 =2.500+4.000+2.500 =9.000kal.
2014-04-30T11:16:39+07:00