The following exercises involve oxides of nitrogen: one kmol of n2o4 dissociates at 25℃, 1 atm to form an equilibrium ideal gas mixture of n2o4 and no2 in which the amount of n2o4 present is 0.8154 kmol. determine the amount of n2o4 that would be present in an equilibrium mixture at 25℃, 0.5 atm. a gaseous mixture consisting 1 kmol of no, 10 kmol of o2, 40 kmol of n2 reacts to form an equilibrium ideal gas mixture of no2, no, o2 at 500k, 0.1 atm. determine the composition of the equilibrium mixture for no+1/2 o_2⇌no_2, k=120 at 500k.