Problems:

3.38 a,b,c	do not hand in.
3.40 a,b,c	do not hand in.
3.48
3.58

Answers:

3.38 a,b,c	no answers will be given.
3.40 a,b,c	no answers will be given.
3.48	1Q2 = - 2649 kJ
3.58	(a) 1W2 = - 846.5 kJ (b) 1Q2 = - 11290 kJ

Hints:
You may want to follow these steps

• Read EACH word.
• Draw some pictures (one for each state).
• Write the given information under each picture.
• Write what you know about the process.
• Write what it is you are to find.
• DRAW the process on a p-v plot.
• Write write the equations you are to use (or might want to use).
• If necessary, find the phase at each state.
• Be sure to indicate which tables you are using.

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