1.Suppose 40.00 J of energy is transferred by heat to a system, while the system does 10.00 J of work. Later, heat transfers 25.00 J out of the system, while 4.00 J is done by work on the system. What is the net change in the system’s internal energy?
- 9J
2. What is the change in the internal energy of a system when a total of 150.00 J is transferred by heat from the system and 159.00 J is done by work on the system?
- 9J
3. What is internal energy?
- It is the sum of the kinetic and potential energies of a system’s atoms and molecules.
4. It states that the entropy of a pure crystal at absolute zero is zero.
- Third Law of Thermodynamics
5. It states that heat transfer occurs spontaneously from higher- to lower-temperature bodies but never spontaneously in the reverse direction.
- Second Law of Thermodynamics
6. Entropy in any closed system always increases; it never decreases.
7. In a system,it is a measure of disorder.
- Entropy
8. Heat transfer occurs spontaneously from a hot object to a cold one.
- True
9. ___________states that the change in internal energy of a system equals the net heat transfer into the system minus the net work done by the system.
- First Law of Thermodynamics
10. The absolute zero temperature is the _______ for determination entropy.
- Reference Point
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