For the reaction I2 (g) + Br2 (g) <--> 2IBr (g), Kc= 280 at 150 degrees celsius. Suppose that 0.530 mol IBr in a 2.00-L flask is allowed to reach equilibrium at 150 degrees celsius. What is the equilibrium concentration of I2, Br2, and IBr? If you could show each step you do to solve for x that would be great.