2NO2 (?)⇌N2O4 (?) a. What is the expression for the equilibrium constant, Keq, for the reaction? If there are 0.400 moles of N2O4 and 0.500 moles of NO2 in a 1.00 L flask at equilibrium at 20°C, what is the Keq?

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Q: 2NO2 (?) ⇌ N2O4 (?) What is the expression for the equilibrium constant, Keq, for the reaction?

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