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m1 = 18 kg
t1 = 30
m2 = 2 kg
t2 = 95
Dit : tcampuran?
Jawab:
Qlepas = Qterima
m2 . c . Δt2 = m1 . c. Δt1
m2 . Δt2 = m1 . Δt1 ⇒ karena kalor jenis sama ( c ) maka dihilangkan saja
m2 . (t2 - t campuran) = m1 . (tcampuran - t1)
2 . (95 - tcamp) = 18 . (tcamp - 30)
190 - 2 tcamp = 18 tcamp - 540
190 + 540 = 18 tcamp + 2 tcamp
730 = 20 tcamp
tcamp = 730 / 20
tcamp = 36.5