Consider the following equilibrium:

$N_2{O}_{4(g)}2N{O}_{2(g)}$

A $1\mathrm{.}00L$ container is initially filled with $0\mathrm{.}200mol{N}_2{O}_4$ At equilibrium, $0\mathrm{.}160molN{O}_2$ are present. What is the equilibrium concentration of $N_2{O}_4?$

$0\mathrm{.}120mo\frac{l}{L}$

$0\mathrm{.}040mo\frac{l}{L}$

$\mathrm{.}0\mathrm{.}160mo\frac{l}{L}$

$0.080mo\frac{l}{L}$

$0\mathrm{.}100mo\frac{l}{L}$