Jawabanmu

2014-05-03T10:24:12+07:00
T = 100-30 = 70

Q= m. C . t
   = 1 . 4200 . 70
   =294000 J
  =294 kJ
2014-05-03T10:33:12+07:00
T = 100-30 = 70

Q= m. C . delta t
   = 1 . 4200 . 70
   =294000 J
  = 294 kJ <--

Semoga membantu :)