Posted by Soojung on Thursday, August 28, 2008 at 10:10pm.
2.5 mol Mg3N2 x (6 mols H2O/1 mol Mg3N2) = mols H2O. Note that the numbers in the factor (that part inside the parentheses) actually are the coefficients in the balanced equation AND that the unit we don't want to keep (mols Mg3N2) cancel and the unit we want at the end (mols H2O) remain unaffected and is the unit for the answer.
15 mol H20
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