Problem: The decomposition of N2O4 at 25°C, N2O4(g) ⇌ 2NO2(g) has Kc = 4.61 x 10-3. A 1.31 L vessel contained 0.0432 mol N2O4 at equilibrium. What was the concentration of NO2 in the vessel? 

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The decomposition of N2O4 at 25°C, 

N2O4(g) ⇌ 2NO2(g) 

has Kc = 4.61 x 10-3. A 1.31 L vessel contained 0.0432 mol N2O4 at equilibrium. What was the concentration of NO2 in the vessel? 

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