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April 20, 2014

Homework Help: chemistry

Posted by Adrian on Wednesday, March 7, 2012 at 2:46pm.

1. Which of these chemical formulasCl2, KCl, Ar, or NO2represents both an element and a molecule?

2. A miner finds a small mineral fragment with a volume of 5.74 cm3 and a mass of 14.4 g. What is the density of that mineral fragment?

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