Problems:
2.22
2.24
2.25
2.29a

Answers:

2.22: ₁W₂ = - 12 kJ
2.24: ₁W₂ = 80.5 kJ
2.25: ₁W₂ = - 487.7 Btu
2.29a: ₁W₆ = ~1.14 kJ

Hints:

• Read EACH word.
• Draw some pictures (one for each state).
• Write the given information under each picture.
• Write what it is you are to find.
• Plotting the process on a p-V plot may help...
• Write write the equations you are to use (or might want to use).
• If necessary, find the phase at each state.
• PLEASE try to be organized.