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May 23, 2015

Homework Help: Chemistry.

Posted by _ _ _ _ _ _. on Thursday, March 19, 2009 at 8:44pm.

I need to know if these two statements are always true, AT; sometimes true, ST; or never true, NT. Thanks!

10. A mole of carbon atoms has a mass approximately three times as great as the mass of a mole of helium atoms.

11. The gram molecular mass of nitrogen is 14.0g.

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