What is the standard reaction entropy $($AS$*,$ J$/$K$.$mole$)$ or the following reaction at $25**C{l}^{-7}.$ mule, $($:$s^{**}(H_3)-131\frac{J}{K}.$mole$\}$

$Na(a)+3H(s)2NH(s)$

A$)-109$

B$)+199$

C$)-399$

D$)+399$

B$)+299$

$21.$ In a $3\mathrm{.}50L$ reaction vessel, there are $0\mathrm{.}249$ moles of $N_2,3\mathrm{.}21{10}^{-2}$ moles of $H_2$ and $6\mathrm{.}42{10}^{-4}$ moles of NI$6.$ What is the equilibrium constant $(K_4)$ of the reaction?

$N_2(g)+3H_2(g)2N{H}_3(g)$

A$)0\mathrm{.}211$

D$)0\mathrm{.}411$

C$)0\mathrm{.}611$

D$)0\mathrm{.}811$

E$)1\mathrm{.}2$

$22.$ The reaction in below is formed by using HCl solution, $28\%$ by mass $($duca: $1\mathrm{.}14\frac{w}{m}L).$

$2Al(0)+6HC{l}_{(aq)},2\frac{A}{C}{l}_{\text{h}\text{a}\text{q}}+3I_{2(s)}$

In terms of this reaction, what is the volume of $HCl$ reacting with $1\mathrm{.}87B$ Al$?$ g$/$mole$,H$:$I\frac{g}{m}$ole

A$)20\mathrm{.}7$

B$)21\mathrm{.}6$

C$)22\mathrm{.}5$

D$)23\mathrm{.}8$

$)25\mathrm{.}2$