For the equilibrium N2O4(g) ⇌ 2 NO2(g) at 350 K, Kc=0.212. Concentration data were collected at two times:
• t=80s [N2O4] = 0.080 M, [NO2] = 0.190 M
• t=120s [N2O4] = 0.070 M, [NO2] = 0.200 M
Determine which of these two times is closer to equilibrium by calculating Qc for each and comparing to Kc. State the time that is closer.