Chemistry at Purdue

<p>I am from Hong Kong and got accepted at Purdue in Chemistry /spec Biochem. I've heard that the chemistry dept is ranked 16th nationally and that my major is ACS accredited. Do you know where I can get a full ranking (preferably free of charge) of chemistry programs in the US? Oh yeah, that ranking 16th, who actually ranks them? I also got accepted into Miami U and Penn State so far. I also applied to Wisc-Mad and UMich.</p>