A bit more about the Ideal Gas Law.
Here's a link to a Demonstration of the Ideal Gas Law. NOTE: This demo uses Java, so if you are concerned about running Java apps on your computer, run this simulation on somebody else's computer!
Or if you download the simulation and run it directly on your computer instead of through your Web Browser you should be OK. You'll probably still have to do some security tasks to get it to run. Reminder: You should be working through the questions at the end of each chapter in the Bartelt text. Solutions to this questions can be found here in the Registered Users Only area.