November 27, 2015

Homework Help: College Chem

Posted by Ann on Monday, January 16, 2012 at 5:47pm.

A 2.446-g sample thought to contain only one volatile substance, MgCO3, was heated in a nitrogen atmosphere for 30 min. After cooling, the residue weighed 2.216 g. Calculate the percentage of magnesium carbonate in the sample.

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