Consider the reactions _1 2 n2(g) + _1 2 o2(g) → no(g) _1 2 n2(g) + o2(g) → no2(g) if these reactions come to equilibrium after combustion in an internal-combustion engine at 2000 k and 200 bar, estimate the mole fractions of no and no2 present for mole fractions of nitrogen and oxygen in the combustion products of 0.70 and 0.05.