Please help (i have a paper tomorrow & i am not able to solve it)

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The discussion revolves around a thermodynamics problem involving a piston-cylinder device containing nitrogen gas undergoing a polytropic process. The user seeks assistance in determining the entropy change of the gas as its volume is halved, while referencing key equations such as the entropy change formula and the first law of thermodynamics. Participants emphasize the importance of showing attempted work rather than simply providing answers to encourage learning. The thread has been moved to a Homework help category to better facilitate focused assistance. Engaging with the problem and demonstrating understanding is crucial for effective learning in thermodynamics.
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Plz help please (i have a paper tomorrow & i am not able to solve it)

QUESTION :

A piston cylinder device contains 1.2 kg of nitrogen gas at 120 kpa and 300 kelvin. the gas is now compressed slowly in a polytropic process during whivh PV ^1.3=constant .The process end when the volume is reduced by one-half. Determine the entropy change of nitrogen during the process.
 
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Please write the equations that you think you should be using, e.g. equation for work on/by the system.

\Delta S = \int_i^f\,\frac{dQ}{T}

and the first law of thermodynamics for a closed system is

Q = \Delta U + W
 
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mohdfasieh, please show what you've attempted, even if it's only that you looked up the equations to use.

Neither you nor we will benefit from any of us just doing your homework for you.

That being said, I'm moving this thread to Homework help.
 

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