(adsbygoogle = window.adsbygoogle || []).push({}); isothermal and adiabatic please help!!!!

1. The problem statement, all variables and given/known data

Hello,

I have been stuck on this problem for about an hour so any hep would be greatly appreciated!

One mole of argon at 25 degrees C and 1 atm pressure is allowed to expand reversibly t a volume of 50 L (a) isothermally (b) adiabatically. Calculate the final pressure in each case assuming ideal gas behavior.

The answers have been given and they are: (a) 0.489 atm and (b) 0.303 atm

I can't get either a or b for some reason I don't know what I am doing wrong! Please help me :(

2. Relevant equations

Cv = 3/2 R Cp= 5/2 R

Boyle's law

3. The attempt at a solution

my answers dont even come close...?

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# Homework Help: Isothermal and adiabatic please help

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