Imagine the reaction CO $+$ O$2=$ O$+$CO$2$ starts with $14$kg of CO and $64$kg O$2$ stored in a box of $100$ m$^3$ with a temperature of $2500$k $.$ find the mole fraction of O$2?$ what is the pressue inside the box $?$ What is the equilibrium constant for the reation Kp$?$