# HW Ch22 - HW Ch 22 Second Law of Thermodynamics Chapter 22...

This preview shows pages 1–2. Sign up to view the full content.

HW Ch. 22 Second Law of Thermodynamics Chapter 22: Second Law of Thermodynamics Conceptual problems 22.C. 1 (5.00) An amount of gas in a well-insulated container is compressed reversibly and adiabatically to half its initial volume. Does the entropy of the gas increase, decrease, or stay the same? Stays the same IncreasesDecreasesStays the same (0/1 submissions used) 22.C. 2 (5.00) A cup of hot coffee is placed inside a large, well-insulated container. Over a five minute period, the entropy of the cup decreases by 100 J/K. What can you say about the entropy of the air surrounding the cup? It does not changeIt increases less than 100 J/KIt increases by exactly 100 J/KIt increases by more than 100 J/KIt decreases (0/2 submissions used) 22.C. 6 (5.00) Which of the following statements must be true of system that undergoes a reversible adiabatic process? There is no work done by the system.The entropy of the system is unchanged.The temperature of the system is unchanged.The internal energy of the system is unchanged. (0/2 submissions used) Section 1: Efficiency 22.1.1 (5.00) An engine running at 38.3% efficiency receives 287 J of heat from the hot reservoir during each cycle. How much heat is transferred to the cold reservoir during each cycle?

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

### Page1 / 4

HW Ch22 - HW Ch 22 Second Law of Thermodynamics Chapter 22...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online