Question

One mole of $Mg_{3}N_{2}$ react with excess of water to form $x$ mole of Ammonia and One mole of $LiH$ react with $H_{2}O$ to give $y$ mole of $H_{2}$ find $\left(\frac{x}{2} + y\right)=$

Answer 1

$LiH+H_{2}O \rightarrow H_{2}+LiOH$
$\left(y\right)$
$\frac{x}{2}+y=\frac{2}{2}+1=1+1=2$