Nickel carbonyl decomposes to form nickel and carbon monoxide, like this: Ni(CO)4 → Ni + 4CO

At a certain temperature, a chemist finds that a 2.7L reaction vessel containing a mixture of nickel carbonyl, nickel, and carbon monoxide at equilibrium has the following composition:

Compound Amount
Ni(CO)4 0.597g
Ni 12.7g
CO 1.98g

Calculate the value of the equilibrium constant for this reaction. Round your answer to significant digits.