Answer
2.25 Moles of $N_{2}$ are produced
Work Step by Step
For every 2 moles of $NaN_{3}$ used there are 3 moles of $N_{2}$ produced
1.5 moles of $NaN_{3}$ $\times$ ( $\frac{3 moles N_{2}}{2 moles NaN_{3}}$) = 2.25 moles of $N_{2}$
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