Question: A Carnot engine of efficiency 4 2 % operates with a cold reservoir at 2 8 C and exhausts 1 2 4 0 J of

A Carnot engine of efficiency 42% operates with a cold reservoir at 28C and exhausts 1240 J of heat each cycle. What is the entropy change for the hot reservoir?
JK
In an isothermal expansion at 27C, an ideal gas does 21.0 J of work. What is the change in entropy of the gas?
JK
A Carnot engine of efficiency 4 2 % operates with

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