For the following processes, calculate the indicated quantities for a system consisting of 1 mol of N2 gas. Assume ideal gas behavior.
a. The gas, initially at 10 bar, is expanded tenfold in volume against a constant external pressure of 1 bar, all at 298 K. Calculate q, w, ∆U and ∆H for the gas.
b. After the expansion in part (a), the volume is fixed, and heat is added until the temperature reaches 373 K. Calculate q, w, ∆U and ∆H.
c. What will be the pressure of the gas at the end of the process in part (b)?
d. If the gas at 373 K is next allowed to expand against 1 bar pressure under adiabatic conditions (no heat transferred), will the final temperature be higher, remain unchanged, or be lower than 373 K? Explain your answer.
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