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Molecular structure
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June 2nd, 2006, 13:55
guanine
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Join Date: Mar 2006
Location: Santa Cruz, California
Posts: 23
I don't think that that is true because margerine is a mixture and plastic (which there are many different types) is not a mixture.
I don't know of any website like the one you describe, but it would be nice if there is one.
guanine
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