WILL GIVE BRANLIEST!!! If a great deal of energy in the form of visible light was being emitted when the universe was very small, hot, and dense, should we expect to find this matter and energy today?

Nitrogen dioxide decomposes according to the reaction 2 no2(g) ⇌ 2 no(g) + o2(g) where kp = 4.48 × 10−13 at a certain temperature. if 0.70 atm of no2 is added to a container and allowed to come to equilibrium, what are the equilibrium partial pressures of no(g) and o2(g)