Carbon dioxide reacts with hot carbon in the form of graphite. The equilibirium constant Kc for the reaction is 10.0 at 850 C
CO2(g) + C(graphite) -> 2 CO(g)
If 23 g of carbon dioxide and 50g of graphite are placed in a 2 L reaction vessel and heated to 850°C. What is the mass of CO at equilibirium?