Let's explore the thermochemistry of the given reaction. Answer the following questions and engage in discussions related to the provided thermochemical data:

$N_2{H}_4(l)+O_2(g)N_2(g)+2H_{2}O(l)$

Part $1$: Reaction Analysis

How many moles of $N_2{H}_4$ are there in $6\mathrm{.}50g$ of $N_2{H}_4?$

How many moles of $N_2{H}_4$ are used per mole of reaction?

If the reaction of $6\mathrm{.}50g{N}_2{H}_4$ evolves $126\mathrm{.}2kJ$ of heat. Calculate the enthalpy change per mole of reaction.

Part $2$: Thermochemical Data Analysis

A$)2Ho(s)+6HF(g)2Ho{F}_3(s)+3H_2(g),{}_{r}H=-1787\mathrm{.}4k\frac{J}{m}ol-rxn$

B$)2Ho(s)+6HCl(g)2HoC{l}_3(s)+3H_2(g){}_{r}H=-1457\mathrm{.}0k\frac{J}{m}ol-rxn$

C$)Ho{F}_3(s)+3HCl(g)ra\frac{r}{r}HoC{l}_3(s)+3HF(g)$

$4.$ In equation A$,$ is $Ho{F}_3(s)$ a reactant or product?

$5.$ What about $Ho{F}_3(s)$ in equation $C?$

$6.$ In equation $B,$ is $HCl$ a reactant or product?

$7.$ What about $HCl$ in equation $C?$

$8.$ Is $HCl$ found in equal moles in Equations $B$ and $C?$

$9.$ What must you do to equations A and $B$ to yield $C?$

$10.$ What is the $rH$ for equation $C?$