At a certain temperature, a 10.0-L container holds four gases in equilibrium. Their masses are 3.5g SO3, 4.6 g SO2, 18.4 g N2, and 0.98g N2O. What is the value of the equilibrium constant at this temperature for the reaction of SO2 with N2O to form SO3 and N2? Make sure you balance the reaction using the lowest whole-number coefficients.

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