Equilibrium
The Senses Bureau:http://www-wilson.ucsd.edu/education/gchem/equilibrium/equilibrium.html
Mt Everest (IrYdium, CMU): http://ir.chem.cmu.edu/irProject/applets/everest/default.asp
    Stoichiometry and Equilibrium (IrYdium, CMU):
      http://ir.chem.cmu.edu/irProject/applets/equilib/default.asp

Introduction to Equilibrium: http://www.sfu.ca/person/lower/Chem1Text/equilibrium/