Empat liter air bersuhu 20°c dan empat liter air bersuhu 40°c dituangkan kedalam wadah yang sama. suhu akhir campuran tersebut adalah? a. 20°c. b.25°c C.30°c D.35°c
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Q in = Q out m₁ c₁ ΔT₁ = m₂ c₂ ΔT₂ (4L) (c air) (T - 20)°C = (4L) ( c air) (40 - T)°C (T - 20)°C = (40 - T)°C 2T = 60°C T = 30°C
m₁ c₁ ΔT₁ = m₂ c₂ ΔT₂
(4L) (c air) (T - 20)°C = (4L) ( c air) (40 - T)°C
(T - 20)°C = (40 - T)°C
2T = 60°C
T = 30°C