Nomor 13,dan nomor 14.. tolong dijawab dg benar yh!! jangan hanya mau poin doank!!

13. dik :
m = 2 kg
c air = 4200 j/kg°c
T akhir = 100°C
T awal. = 28°c
dit. : Q….?
peny:
Q = m. c. ∆t
= m.c. (T2-T1)
= 2 kg . 4200 j/kg°c. (100°c-28°c)
= 2 kg . 4200 j/kg°c . 72°c
= 604.800 j
= 604,8 kj (c)
14.dik :
m = 500 g = 0,5 kg
∆t = T2 -T1 = 83-23 = 60°c
c. = 9 × 10² j/kg°c
dit. : Q….?
peny :
Q. = m.c.∆t
= 0,5 . 900. 60
= 27000 j (a)