If an equilibrium mixture contains 0.54 m no2, what is the molar concentration of n2o4?

From the chemical equ NO2 + 02 gives N2O4 . The above means that 1 mole of No2 produces1 mole of N204. Hence 0.54 mole of NO2 will also produce 0.54 mole of N2O4.

And a) oxygen i believe

Is a logical series of steps