Gas Law Reflection

I have not prepared enough for the gas laws test, I understand Pv=nrt but I have not spent enough time doing practice problems or learning the applications of the laws. I should spend some time reviewing these before finals and making sure that i am confident finding partial pressure, molar mass, and the identity of a gas. I should spend more time viewing websites like these:

http://faculty.clintoncc.suny.edu/faculty/Mike.Lawliss/My_webpage/map/pvnrt.htm

http://www.westfield.ma.edu/cmasi/gen_chem1/Gases/ideal%20gas%20law/pvnrt.htm

http://ww2.chemistry.gatech.edu/class/peek/1310/notes/09-gases.pdf

http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/idegas.html