Question

Diketahu 1 Kg air bersuhu 90 Derajat C di campur dengan 2 Kg air bersuhu 60 Derajat berapa suhu campuran air tersebut?

Answer 1

Verified answer

Diket: m1 = 1 kg = 1000gr
m2 = 2 kg = 2000gr
t1 = 90ºC
t2 = 60ºC
Jwb:
Q = Q
m1 ( t - t1 ) = m2 ( t2 - t )
1000 ( t - 90 ) = 2000 ( 60 - t )
1000t - 90.000 = 120.000 - 2000t
1000t + 2000t = 120.000 + 90.000
3000t = 210.000
t = 210.000 / 3000
t = 70ºC

Answer 2

Jawabannya:

t= m1.t1+m2.t2/m1+m2
t= 1 kg. 90°C+2 kg. 60°C/1 kg + 2 kg
t= 90 kg°C+120 kg°C/3 kg
t= 210 kg°C/3 kg
t= 70°C

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