For the reaction $H_2(g)+I_2(g)2HI(g),K_c=55\mathrm{.}3$ at $700K.$ In a $2\mathrm{.}00-$L flask containing

an equilibrium mixture of the three gases, there are $0\mathrm{.}056g{H}_2$ and $4\mathrm{.}36g{I}_2.$ What is the

mass of $HI$ in the flask?