Question

No.11 gimana caranya ya? Thanks

Answer 1

Dik : m = 500 g = 0,5 kg
t1 = 60°C
t2 = 100°C
Cair = 1 kal/g°C x 4200 = 4200 J/kg°C
U = 540 x 4200 = 2.268.000 J/Kg°C
Dit : Q A-C ?
Jawab :
Q A-B = m.c.Δt
= 0,5 x 4200 x (100-60)
= 2100 x 40
= 84.000 Joule
Q B-C = m.U
= 0,5 x 2.268.000
= 1.134.000 Joule
Q A-C = 84.000 + 1.134.000
= 1.218.000 Joule

Semoga membantu, jadikan terbaik ya !