August 2018 1 117 Report
Sebuah batang alumunium bersuhu 30 derajat celcius di masukkan ke dalam 150 gram air bersuhu 90 derajat celcius. Apabila suhu campuran 50 derajat celcius, massa alumunium sebesar ... kg
( C air = 4200 J/kg derajat celcius dan C alumunium = 900 J/kg derajat celcius)

a. 1,4
b. 2,1
c. 4,2
d. 8,4

berikan caranya

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