diketahui 1kg air bersuhu 90 derajat celsius dicampur dengan 2kg air bersuhu 60 derajat celsius.berapakah suhu campuran air tersebut
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= 1kg
= 90°C
= 2kg
= 60°C
Ditanyakan : Tc..?
Penyelesaian :
Q lepas = Q terima
m . c . Δt = m . c . Δt
m1 . c1 . (t1 - Tc) = m2 . c2 . (Tc - t2)
1 . 4180 . (90 - Tc) = 2 . 4180 . (Tc - 60)
376200 - 4180ta = 8360Tc - 501600
501600 + 376200 = 8360Tc + 4180Tc
877800 = 12540Tc
Tc = 70°C