[terry33199]

No. You have to write formula for reaction equilibrium and solve it using ICE table Ygg mentioned.

i was trying to find the equilibrium concentration at that time. 
What did you get as the value of the equilibrium constant though?  I think I may have figured that out.

[Borek]

What did you get as the value of the equilibrium constant though?

You don't calculate equilibrium constant - it is given, and you have to use it to calculate concentrations putting it into formula for the equilibrium constant for your reaction. Write this formula.

[terry33199]

What did you get as the value of the equilibrium constant though?

You don't calculate equilibrium constant - it is given, and you have to use it to calculate concentrations putting it into formula for the equilibrium constant for your reaction. Write this formula.

Oh sorry, I posted it wrong.  Here:
(Fe^3+) + (SCN^-)  <->  FeSCN^2+

5ml of .002M FE(NO)_3 , 4ml of .002M KSCN, and 1 ml of water are mixed.  In the equilibrium mixture, the concentration of FeSCN^2+ is .000131M

That should be right now..
What value do you get for the equilibrium constant now?  I think I may have it.

[Borek]

Where is reaction quotient?