[Hgrigsby]

ok here goes

For the following equilibrium, Kc=8.5x10^-3 at 150 degrees C
  2Ibr(g)<====>I2(g)+Br2(g)

a)WHat is the value of Kp for this reaction at 150 degrees C?
b) If 0.025 mol of IBr is placed in a 2.0L container, what is the molar concentration of IBr at equilibrium?

For a) I got 1, it makes me uneasy to get such an exact number.
For b) I wanted to make an ICE table to tabulate all my numbers but I think all I have is the initial concentration of IBr.  Does the Kc value given equal the Change?

Thanks