Value of \( K_p \) for the equilibrium reaction \( \mathrm{N_2O_{4(g)}} \rightleftharpoons 2\,\mathrm{NO_{2(g)}} \) at \( 298 \, \text{K} \) is \( 47.9 \). The \( K_c \) for this reaction at same temperature is ______. (Nearest integer)
\(( R = 0.83 \, \text{L bar K}^{-1} \text{mol}^{-1} )\)
