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Title: Roughly how many different chemical compounds are there? Post by: einsteindude on Dec 2, 2014 Roughly how many different chemical compounds are there?
A) 20 B) 4 C) many more than 500 D) 500 E) 100 Title: Re: Roughly how many different chemical compounds are there? Post by: mel!811 on Dec 4, 2014 Content hidden
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