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Finding Final Volume  almost got it 
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#1
Jan2505, 12:21 PM

P: 17

Ok, here is what is given:
1.00 mol O2 Ti = 300K Vi = 5.00L 4400 j of energy transfered by heat to the system Vf = ? Constant Pressure = 29.4 J/mol * K So I set the problem up using Q = n(Constant Pressure)(Tf  Ti) Solving for Tf I find that Tf is equal to 449.7K. Then using equation (Vf  Vi) = (nR(Tf  Ti)) / P Vf = ((1.00mol * 8.31 J/mol*K * 149.7K) / (1.013*10^5 N/m^2)) + 5.00L I am getting Vf = 17.28 L Can anyone tell me what I am doing wrong? My teacher told me the answer should be 7.52, could he of possibly meant 17.52? Any help would be appreciated! 


#2
Jan2505, 12:59 PM

Sci Advisor
HW Helper
P: 11,951

1.The teacher is right.
2.The final temperature u computed is right... 3.The formula u used is wrong... Daniel. 


#3
Jan2505, 01:28 PM

HW Helper
P: 4,124




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