tlong bantuiin nah jawabanya sma rumusnya

m = 1 kg
Ces = 2100 J/kg⁰C
L = 336000 J/kg⁰C
Cair = 4200 J/kg⁰C
Q1 + Q2?

penyelesaian:
Proses P - Q:
Q1 = m . Ces . Δt

Q1 = 1 . 2100 . 5

Q1 = 10.500 J

Proses Q - R:
Q2 = m . L

Q2 = 1 . 336000

Q2 = 336000 J

maka Proses P - Q - R:
Q1 + Q2 = 10500 + 336000 = 346.500 J