Liquid hydrazine $(N_2{H}_4)$ is injected in a combustion chamber at $400K$ and burned with $100\%$

excess air at $298K.$ The combustion chamber is jacketed with water. The combustion products

leave at $900K.$ In the test; $50\mathrm{.}0$gmol of $N_2{H}_4$ are burned per hour and water at $25C$ enters the

water jacket for cooling at the rate of $1\mathrm{.}00k\frac{g}{m}in.$ The reaction is:

$N_2{H}_4(l)+O_2(g)N_2(g)+2H_{2}O(g)$ Calculate: $($a$)$The heat that is added or removed from

the reactor to the water jacket, b$)$Exit temperature of water from the water jacket, $($c$)$ Volumetric

flow rate of the water at exit.

Data:

Heat capacity is in the form; is in $\{$:$C)$

Component $T,a**{10}^3,b**{10}^5,H_f(k\frac{J}{g}$mol$)$

$N_2{H}_4(1)$

$H_{2}O(1)$

$H_{2}O(g)$

$N_2(g)$

$(C),139$

$44\mathrm{.}77$

$(C),75\mathrm{.}4,-285\mathrm{.}84$

$(C),33\mathrm{.}5,0\mathrm{.}7,-241\mathrm{.}83$

$O_2(g)$

$(C),29\mathrm{.}0,0\mathrm{.}22$

$(C),29\mathrm{.}1,1\mathrm{.}2$