Given at $25C$

$C(g)+B(g)A+D(g)K_1$

$A(g)+2B(g)AB(g),K_2$

Find the equilibrium constant $K_3$ for the following reaction at $25C$

$3A(g)+2D(g)(AB)(g)+2C(g)$:$K_3=?$

a$.K_{1}2K_2$

b$.(K_1{)}^{-2}x{K}_2$

c$.K_1{K}_2^2$

d$.K_1{K}_2^{-2}$

e$.K_1{K}_2^3$

$8.$ The value of $AH$ for the reaction below is $-126k\frac{J}{m}ol.$ How much energy is released when $80g$ of NaOH $($molar mass: $40\frac{g}{m}ol)$ is formed in the reaction?

$2N{a}_2{O}_2(S)+2H_{2}O(l)$

$4$NaOH$(s)+O_2(g)$

a$.63kJ$

b$.252kJ$

d$.126kJ$

c$.3\mathrm{.}9kJ$

$9.$ What is the heat energy required to completely vaporize $10g$ of $H_{2}O($l$)$ beginning at $0C.($The heat capacity of water is $4\mathrm{.}18\frac{J}{g}.K$ and the $AH$ of water is $2260k\frac{J}{k}g)$

a$.4\mathrm{.}9kJ$

b$.228\mathrm{.}1kJ$

c$.26\mathrm{.}8kJ$

d$.2126kJ$

e$.4\mathrm{.}2kJ$