Answer : The mole ratio of
is, 1 : 2 and the mole ratio of
is, 1 : 4
Explanation :
As we are given the balanced chemical reaction. Now we have to determine the mole ratio of hydrazine to hydrogen peroxide and hydrazine to water.
The given balanced chemical reaction is,

By the stoichiometry we can say that, 1 mole of hydrazine
react with 2 moles of hydrogen peroxide
to give 1 mole of nitrogen gas
and 4 moles of water
.
From this we conclude that,
The mole ratio of
is, 1 : 2
The mole ratio of
is, 1 : 4
Therefore, the mole ratio of
is, 1 : 2 and the mole ratio of
is, 1 : 4