APFIVE Entropy Change at Thermal Equilibrium
Two identical blocks, initially at different temperatures, are brought into thermal contact within an isolated system. After the system reaches thermal equilibrium, which statement best describes the change in the system’s total entropy?
A
The entropy change depends on the initial temperature ratio
B
The entropy increased and the process is irreversible
C
The entropy remained constant as energy is conserved
D
The entropy decreased but work was done on the system
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