APFIVE Entropy Change in Thermal Equilibrium
Two systems in thermal contact have heat capacities C₁ = 500 J/K and C₂ = 1500 J/K. Initially, system 1 is at 90°C and system 2 is at 30°C. What fraction of the maximum possible entropy increase is achieved when the systems reach thermal equilibrium?
A
0.75
B
0.25
C
0.5
D
1.0
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