The following reaction was performed in a sealed vessel at 751°C:
H2 (g) + I2 (g) ⇌ 2HI (g)
Initially, only H2 and I2 were present at concentrations of [H2] = 3.35 M and [I2] = 2.35M. The equilibrium concentration of I2 is 0.0600 M. What is the equilibrium constant. Kc, for the reaction at this temperature?
Express your answer numerically.