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Posted by on Thursday, March 24, 2011 at 1:28pm.

Please understand that one of our chemistry tutors is on vacation this week. Please be patient.

  • gorge - , Thursday, April 14, 2011 at 11:40pm

    suppose you a piece of an unknown substance. describe how you would determine wether or not the substance was metal

  • To all chemistry students - , Wednesday, May 4, 2011 at 1:30pm

    shine in metal and non metal is not and nonmetal is poor conductor

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