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Unformatted text preview: CH302 Worksheet Answer Key: A Little Thermo Review 1. What two processes (a.k.a. path functions) can transfer internal energy between a system and its surroundings? What symbols are used for these variables? Heat and work. q for heat and w for work. 2. Write a good definition for a state function. A state function is a property of a system which is dependent exclusively on the state of the system and not the processes leading to that state. 3. Name some state functions. Temperature, Volume, Pressure, Number of Moles, Gibb's Free Energy, Entropy, Enthalpy, Internal Energy, etc. 4. The first law states that the value of which state function is conserved in an isolated system? What two symbols are used for this state function? Internal energy (E or U). 5. What is an isolated system? Name the most obvious example of an isolated system (hint: big). A closed system is one that exchanges neither matter nor energy with its surroundings. The universe is the most obvious example because it has no surroundings. 6. What inequality is often associated with the second law of thermodynamics? What does it mean in plain English? ΔS univ > 0. This means that the entropy of the universe is always increasing. 7. What equality is often associated with the second law of thermodynamics? What does it mean in plain English?...
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This note was uploaded on 10/07/2011 for the course CHEMISTRY 51635 taught by Professor Laude during the Spring '10 term at University of Texas at Austin.
- Spring '10