I have posted my Chemical Eq'n Balancer program for the 86. Although it was mean't to be for the 86, it will still work for the 85 (I think). It should be at www.ticalc.org Try it out, and let me know of any bugs. There are a couple bugs floating around in my program; if you see some let me know. Thanks, Mohsan Habibi http://members.aol.com/qmh Seminole High Student