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Unformatted text preview: V > 0 and W = P dV b) Calculate the final temperature of the gas. Show all work. T f = (P f V f )/(n f R) = (10 3 J/m 3 )(2.3 m 3 )/(1 mole * 8.314 J/(mole*K)) = 276.64 K c) Calculate the change in thermal energy E th during the process. T i = (P i V i )/(n i R) = (10 3 J/m 3 )(1.3 m 3 )/(1 mole * 8.314 J/(mole*K)) = 156.36 K E th = (3/2)*n*R* T = 3*1 mole*8.314 J/(mole*K)*(276.64 K - 156.36 K)/2 = 1500 J = 1.5 kJ d) What is the change in internal energy, U, for the process? Explain. U = E th = 1.5 kJ, because E bond = 0 e) Calculate the work in the process? ( Hint: you do not need to integrate the P(V) curve .) W = U Q = 1500 J - 2600 J = -1100 J...
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- Spring '08