Jawabanmu

2014-04-17T20:04:36+07:00
Q      = m x c x Δt
4800 =  20 x c x ( 70 - 20)
4800 = 20 x c x 50
4800 = 1000  x c
c      =  \frac{4800}{1000}

= 4,8 kal / gr°C
2014-04-17T20:05:39+07:00
Dik.Q=4800
     m=20
     Δt=70-20=50
dit.C=?

Q=m.C.Δt
4800=20xCx50
4800=1000xC
C=4800/1000=4,8 kal/gr°c