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The equilibrium constant Kc for the equation
2H2 (g) + CO (g) ⇌ CH3OH (g)
is 31 at a certain temperature. If there are 5.85 x 10-2 moles of H2 and 4.47 x 10-3 moles of CH3OH at equilibrium in a 7.63-L flask, what is the concentration of CO?