N2O4 is an important component of rocket fuel, at 25°C N2O4 is a colourless gas that partially dissociates into NO2. the colour of an equilibrium mixture of these 2 gasses depends on their relative proportions, which are dependent on temperature. equilibrium is established in the reaction N2O4<=> 2NO2 at 25°C in 3.00L of container and 7.64g of N2O4 and 1.56g of NO2. what is the Kc for this reaction?