AIChE Job Resource Center – AfterColleges hosts a website that lists jobs and internships.
Integrator – You should seriously invest in a TI-89 but here it is anyways.
Measurement Converter – It rocks! and it knows R, the gas constant.
WWW Unit Converter – Easy and fast.
Frink unit-savvy converter – I hear it’s better than using Google (FYI, Google uses some weird gallon unit that’s not the US or imperial number but something in between).
Convert – Conversion program.
Dynamic Periodic Table – Calls Wikipedia’s article on the element. Also has a neat temperature slider that gives pure substance phase information.
Periodic Table – Self explanatory.
Web Elements – Periodic table with 3rd grade-style information about elements.
NIST Webbook – My savior.
Chemistry Webbook – What’s the enthalpy of CO2 at 125 atm and 1320 R?
Chemfinder.com – It’s told me the formula weight of styrene like 20 times.
Gas Constant Values – Wait, the gas constant EXISTS in Chu per lb-mol K?
Laplace Transforms – When you’re a senior, you’ll appreciate this link.