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Thermodynamics Question 
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#1
May411, 10:31 AM

P: 2

1. The problem statement, all variables and given/known data
A balloon has 0.310 mol of polyatomics gas, Initial volume 7500cm³ and temp 29 degrees C, gas first expands isobarically until volume double. Then expands adiabatiacally until temp returns to initial value, assume gas is ideal gas, C_p = 33.26 J/mol*K, gamma = 4/3. What is the final volume V? 2. Relevant equations I think I have to use PV = nRT T_1V_1^(gamma1) = T_2V_2^(gamma1) 3. The attempt at a solution I've tried to find the temperature after it expands isobarically and use that as the T1 value, I think this is the only trouble I'm facing here, after that I can find V_2 and add all volumes together, please guide me on how to find T after the isobaric expansion. 


#2
May511, 10:53 AM

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#3
May511, 11:32 AM

P: 2

I've actually solved it, thank you anyway



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