Problem: At a certain temperature, the equilibrium constant for the following chemical equation is 3.90. SO2 (g) + NO2 (g) ⇌ SO3 (g) + NO (g) At this temperature, calculate the number of moles of NO2(g) that must be added to 3.12 mol of SO2(g) in order to form 1.30 mol of SO3(g) at equilibrium.

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At a certain temperature, the equilibrium constant for the following chemical equation is 3.90. 

SO(g) + NO2 (g) ⇌ SO(g) + NO (g) 

At this temperature, calculate the number of moles of NO2(g) that must be added to 3.12 mol of SO2(g) in order to form 1.30 mol of SO3(g) at equilibrium.

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