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Q = 20 4200 (100 - 20)
Q = 84000 80
Q = 6720000 Joule
Q = 6,72 MJ
m = 20kg
Δt = 100 - 20 = 80⁰C
c = 4200 J/⁰C
ditan
Q = .......?
penyelesaian
Q = m . c. ΔT
Q = 20 . 4200 . 80
Q = 6720000
jadi kalor yang diperlukan adalah 6720000 J = 6720 kJ = 6,72 MJ
jangan lupa dipelajari ya
terbaik