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Answer to Question #121607 in Mechanical Engineering for Alwin
Question #121607
Two systems have the following equations of state and are contained in a closed cylinder, separated by a fixed, adiabatic and impermeable piston. N1=2, N2=1.5
. The initial temperatures are T1 = 175 K and T2 = 400 K. The total volume is 0.025 m^3
. The piston is allowed to move and heat transfer is allowed across the piston. Determine the final temperature of the system (in Kelvin).
1/T1=3/2(R*N1/U1) , P1/T1=R*N1/V1
1/T2=5/2(R*N2/U2) , P2/T2=R*N2/V2
. The initial temperatures are T1 = 175 K and T2 = 400 K. The total volume is 0.025 m^3
. The piston is allowed to move and heat transfer is allowed across the piston. Determine the final temperature of the system (in Kelvin).
1/T1=3/2(R*N1/U1) , P1/T1=R*N1/V1
1/T2=5/2(R*N2/U2) , P2/T2=R*N2/V2
Expert's answer
Let are the volume of two system
Now,
As both system are in closed container in adiabatic condition
we know that, PV=nRT
T= 270.42 K, This is the final temeprature
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#257866 on May 2020
#257866 on May 2020
Comments
this problem can be solved only for the difference of internal energy; in this case deltaU1=deltaU2; you have all necessary information to calculate final T; besides, you can calculate the initial volume of each gas; however, the problem is not asking that. Solution is T=300K
Dear Alwin
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Thats a wrong answer.
Please make sure your solutions are right and read the question once again before solving.
Where is the volume used?
Thanks for solving the sum but this sum 121607 seems to be wrong can someone please look into it
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