Help with Equilibrium: CH4 + H2O -> CO + 3H2

[apiwowar]

In a study concerning the conversion of methane to other fuels, a chemical engineer mixes gaseous CH4 and H2O in a 0.32L flask at 1200 K. At equilibrium the flask contains 0.26 mol of CO, 0.091 mol of H2, and 0.041 mole of CH4. What is the [H2O] at equilibrium? Kc=0.26 for the eqtn
annnd the eqtn is CH4 + H2O <-----> CO + 3H2

have no idea how to do this, any tips or help?

 

[Borek]

If you would try to follow template, you would have the answer ready.

What is the equation for Kc for this reaction?

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methods