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= 2 . 2.100 . 5
= 21.000 J
Q = m . L
= 2 . 336.000
= 672. 000 J
Q1 + Q2 = 21.000 + 672.000 = 693.000 J (c)
Δt = 5'C
C es = 2100 J/kg'C
L es = 336.000 J/kg
Dit : Q ?
Q = m.C es.Δt
= 2 kg . 2100 J/kg'C . 5'C
= 21.000 J
Q = m.L es
= 2 kg . 336.000 J/kg
= 672.000 J
Jadi, kalor yg diperlukan adalah :
21.000 J + 672.000 J = 693.000 J (C).
maaf ya kalau salah