At a certain temperature K for the reaction 2NO,=N»O4 is 7.5 liters/mole. If 2.0 moles of NO2 are placed in a 2.0-liter container and permitted to react at this temperature, calculate the concentration of N2O4 at equilibrium. Select one: O a. 0.65 moles/liter O b.7.5 moles/liter O c. none of these O d. 0.82 moles/liter O e. 0.39 moles liter

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