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Chemistry 21 Online
OpenStudy (anonymous):

Help! I just found out I have a college entry test in chemistry due today, and its been years since I've taken chemistry! Where can I review online fast? I'm willing to work all day, but I don't know where to start!

OpenStudy (matt101):

https://www.khanacademy.org

OpenStudy (anonymous):

If your college entry test is today, it does not leave you very much time to prepare. Even if you work all day on this, there is a lot of chemistry to try to cover in the time you have available. Why don't you see if you can write the college entry test later, to give you more time to prepare?

OpenStudy (joannablackwelder):

http://chemed.chem.purdue.edu/genchem/beginners.html

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