Consider the reaction shown below. 

H₂(g)  +  I₂(g)  ≡  2 HI(g)        Kc = 54

Initially a container holds only 0.12 M H₂ and 0.12 M I₂. What will be the equilibrium concentrations of the H₂ and the HI?
[H₂] = 0.03 M

[HI] = 0.19 M