STEP-BY-STEP EXPLANATION*
Given information*
[tex]\begin{gathered} \text{The number of moles of NO = 6.00 }\times10^{-2}\text{ moles} \\ \text{The number of moles of Cl2 = 6.7 }\times10^{-3}\text{ moles} \\ \text{The number of moles of NOCl = 4.00 moles} \\ K_c\text{ = 2 }\times10^5 \end{gathered}[/tex]The first step is to write the balanced equation of the chemical reaction*
[tex]2NO_{(g)}+Cl_{(2)(g)}\rightleftarrows2NOCl_{(g)}[/tex]The next step is to write the chemical equilibrium expression for the above reaction*