Question

The reaction between hydrazine and hydrogen peroxide is shown in the balanced chemical equation N₂H₄ + 7 H₂O₂   2 HNO₃ + 8 H₂O. If 4.0 moles of hydrazine were used up in the reaction, the number of moles of water produced would total

Answer 1

Solution.

4 mol x mol

$N_2H_4 + 7 H_2O_2 \to2 HNO_3 + 8 H_2O;$

1 8

$x=\dfrac{4mol\sdot 8}{1}=32mol;$

Answer: $32mol.$