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**1. Homework Statement**

2NS(g) + 2H2(g)<---> N2(g) + 2H2S(g) @ equilibrium in a 4.L flask @ 25

^{o}

C. 2.5 mol of eah component initially is put into the flask. At equilibrium, 2.5 mol of NS is present. what is Kc for the rxn at this temp??

**2. Homework Equations**

Kc=[products]/[reactants]

M=moles/L

initial - change = equilibrium

**3. The Attempt at a Solution**

Kc=1 i thought the answer is a little odd.... because the intital and equilbrium is 2.5 moles for NS so I'm unsure about my answer... please help! geatly appreciates all help! thank you in advance.

if my answer is wrong...can someone show me how to do it i know how to set up Kc, but im troubled when finding the intial, change and equilibrium of each components.