Consider the reaction \rm CO(g) + NH_3(g) \rightleftharpoons HCONH_2(g),~~~~{\it K}_c=0.860 If a reaction vessel initially contains only \rm CO and \rm NH_3 at concentrations of 1.00 M and 2.00 M, respectively, what will the concentration of \rm HCONH_2 be at equilibrium?