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Author Question: An ideal gas with = 1.30 occupies 7.0 L at 300 K and 200 kPa pressure. It is compressed ... (Read 55 times)

ssal

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on: Jul 29, 2018
An ideal gas with  = 1.30 occupies 7.0 L at 300 K and 200 kPa pressure. It is compressed adiabatically to 1/7 of its original volume, then cooled at constant volume to 300 K, and finally allowed to expand isothermally to 7.0 L.
 
  How much work does the gas do during this process? The ideal gas constant is R = 8.314 J/mol  K = 0.0821 L  atm/mol  K. A) -980 J
  B) 6400 J
  C) -270,000 J
  D) -6400 J
  E) 980 J

Question 2

A container with rigid walls is filled with 4 mol of air with CV = 2.5R. How much does the internal (thermal) energy change if the temperature of the air rises from 16C to 437C? The ideal gas constant is R = 8.314 J/mol  K.
 
  A) 35 kJ
  B) 421 J
  C) 3.5 kJ
  D) 8.75 kJ


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nanny

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Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

A


ssal

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Reply #2 on: Jul 29, 2018
Thank you!


nanny

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Reply #3 on: Jul 29, 2018
Always glad to help...


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