Answer
Please see the work below.
Work Step by Step
The chemical reactions for the rocket fuel or oxidizer and $H_2O$ are given as
$H_2(g)+\frac{1}{2}O_2(g)\rightarrow H_2O(g)\space \Delta H=-242KJ$
$2N_2H_4(l)+N_2O_4(l)\rightarrow 3N_2+4H_2O\space \Delta H=-1049KJ$
