A mixture of 3 moles of `SO_(2)`, 4 moles of `NO_(2)`, 1 mole of `SO_(3)` and 4 moles of NO is placed in a 2.0L vessel. `SO_(2)(g)+NO_(2)(g) iff SO_(3)(g)+NO(g)`. At equilibrium, the vessel is found to contain 1 mole of `SO_(2)`. Calculate the value of `K_(C)`.
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