Department of Chemical and Biomolecular Engineering at Clarkson

Calculator for Chemical Engineering (Be cautious -- some work better than the others; always verify the results for a known case before using the calculator for a new situation)

Chemistry/Chemical Engineering resource including physical properties and tutorials

Calculator for Mathematics

Some Information on Mathematics and Mathematicians (You may want to begin by reading "Information for New Users" under "Other Features")

Libraryspot -- A  useful list of reference sources