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Dik : m = 500g/0.5kg
c = 4200 j/kg°c
t1 = 25°c
t2 = 100°c
∆t = (t2-t1) yaitu (100°c-25°c=75°c)
Dit : Q ?
Jawab :
Q = m×c×∆t
=0.5×4200×75
Q = 157500 Joule
Jadi, kalor yang dibutuhkannya adalah 157500 Joule.
Semoga membantu