The following reaction was performed in a sealed vessel at 754 C: H(g) +12(g) = 2HI(g) Initially, only H and I2 were present at concentrations of [H] =3.05M and I] =2.35M. The equilibrium concentration of I2 is 0.0700 M. What is the equilibrium constant, Kc, for the reaction at this temperature? Express your answer numerically