In a $3\mathrm{.}00$L container, $0\mathrm{.}120$ mol of SO$2$ and $0\mathrm{.}120$ mol of NO$2$ were mixed and allowed to come to

equilibrium. K for this temperature is $20\mathrm{.}25.$ What are the equilibrium concentrations?

SO$2($g$)+$ NO$2($g$)->$NO$($g$)+$ SO$3($g$)$