1B Practice midtrem-Thermodynamics

1B Practice midtrem-Thermodynamics - CLAS Chem 1B Practice...

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CLAS Chem 1B Practice Midterm 1 Ch 9, 10 1. Exactly 313.5 J of heat will raise the temperature of 10.0 g of a metal from 25.0 to 60.0 °C. What is the specific heat capacity of the metal? 2. One mole of an ideal gas expanded isothermally and irreversibly from 1L to 10 L against a constant external pressure of 1 atm at 30 °C. During this time, the pressure of the gas goes from 50 atm to 5 atm. Calculate w, q, ∆E, ∆H, and ∆S for this process. 3. One mole of helium was allowed to expand by a reversible path at a constant temperature of 30 °C. The initial pressure was 50 atm and the final pressure was 1 atm. Calculate w, q, ∆E, ∆H, and ∆S for this process. 4. In which of the following changes is the work done by an ideal gas the largest at 25 °C? a. an isothermal expansion from 1 to 10 L into a vacuum b. an isothermal expansion from 1 to 10 L against 1 atm external pressure c. an isothermal expansion from 1 to 10 L against 5 atm external pressure d. an isothermal reversible expansion from 1 to 10 L
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This note was uploaded on 04/20/2010 for the course CHEM1A/1B Chem Labs taught by Professor Van koppen during the Spring '10 term at UCSB.

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1B Practice midtrem-Thermodynamics - CLAS Chem 1B Practice...

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