A System Consists of Two Thermal Reservoirs in Contact with Each

Multiple Choice

A system consists of two thermal reservoirs in contact with each other, one at temperature 300°C and the other at temperature 200°C. 600 J of heat transfers from the 300°C reservoir to the 200°C reservoir. What is the change in entropy of this system?

A) 0.221 J/K
B) 1.00 J/K
C) 5.00 J/K
D) -1.00 J/K
E) 2.31 J/K