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posted by  Mr. Eko on 11/3/2009 12:32:46 PM  |  status: Live  |  Earned Karma: 25

Thermodynamics Question: Entropy Change (Insulated tank)

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N/A N/A N/A N/A 11/5/2009 at 9:00:00 PM
Question Details:
An insulated rigid tank initially contains 2.7 kg of carbon dioxide gas at 100 kPa and
27?C. A rotating paddle wheel adds 200 kJ of work into the system.

Assume that specific heats for carbon dioxide are constant at their 27?C values.
(a) What is the final temperature (?C) of carbon dioxide?
(b) Calculate the entropy change (kJ/K) for carbon dioxide during this process.

Now consider that specific heats for carbon dioxide are not constant.
(c) What is the final temperature (?C) of carbon dioxide?
(d) Determine the entropy change (kJ/K) for carbon dioxide during this process.
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