please help :(

At a particular temperature, the decomposition of carbon dioxide gas into carbon monoxide and oxygen has an equilibrium constant of 2.0106. 2CO2(g)2CO(g)+O2(g) If 3.0mol of carbon dioxide is put in a 5.0L container, what is the equilibrium concentration of CO? Remember to check if the change in initial reactant concentration can be neglected. Express your answer to 2 significant figures. [CO]=molL1