code class$=$"asciimath"$>$I$\_(2)($g$)+$Cl$\_(2)($g$)2$ICl$($g$),$K$\_($p$)=81\mathrm{.}9($at $298$K $)$ Express your answer to three sifnificant figures. View Available Hint$($s$)A?K_c=$ Provide Feedback