Thermo Help for Exam: Textbook Examples & Problems

[PhysicsGod]

Hey, i have a Thermo exam tomorrow, and I've been working through the textbook examples and problems, and i was wondering if anyone here had some helpful problems for me to work out or any general hints or anything.

Our textbook is the 7th edition of moran shaprio thermo and the exam is mainly over chapter 3, which is basically finding all of the properties such as pressure, temp, specific volume, work, and such of ideal gases, like r-22, ammonia and others through the use of steam tables.

Any help would be appreciated.
Thanks.

Also i apologize if this is in the wrong section, i wasn't sure where to put it.

 

[PhysicsGod]

Also, i guess a question i have is when to use the compression tables vs the steam tables? They both give the same values, but the steam tables are more accurate, and it seems that the steam tables can be used whenever the compression can, so why would i want to use the compression table approach?