mohon bantuannya berserta caranya..

Q = 18 kj = 18000J
t = 75-25 = 50
m = 800g = 0,8 kg

rumus :
Q = mc∆t
ditanya= c...?
c = Q / m.∆t
c = 18000/50×0,8
= 18000/40 = 450 J/Kg°C
semoga membantu;)