Did the Pressure of a Monatomic Gas Change During Isentropic Heating?

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Homework Help Overview

The discussion revolves around the behavior of a monatomic ideal gas undergoing isentropic heating, specifically focusing on the change in pressure as the gas is heated from 289K to 458K while maintaining constant entropy.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss using the ideal gas law and isentropic relations to determine changes in pressure and volume. There are inquiries about the calculations and potential errors in decimal placement.

Discussion Status

Some participants have provided guidance on using the ideal gas formula and have shared their calculations. There is an ongoing exploration of the results, with participants checking each other's work and discussing possible mistakes.

Contextual Notes

Participants are working under the constraints of a homework assignment, which may limit the information they can share or the methods they can use. There is a focus on ensuring that the entropy remains constant throughout the process.

kolua
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Homework Statement


A sample containing 3.65 mol of a monatomic ideal gas is heated from 289K to 458K, and the entropy remains constant. If the initial volume of the sample was 0.0980m^2, by what factor did the pressure increase or decrease during this process?

Homework Equations

The Attempt at a Solution


it's isentropic. use the formula to get volume and then substitute it into ideal gas formula? would love some hints please!
 

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kolua said:
it's isentropic. use the formula to get volume and then substitute it into ideal gas formula?
That should work. What did you get?
 
TSny said:
That should work. What did you get?
I got 0.316 and the answer is 3.16. thanks, I think I might have made mistake in the decimal.
 
I agree with the answer of 3.16. If you can't find your error, post the details of your work.
 

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