[mmt61]

The question is.

At 900degrees C, Kp = 1.04 for the reaction
CaCO3 (s) --> CaO(s) + CO2(g)
At a low temperature, dryi ice (solid CO2), calcium oxide and calcium carbonate are introduced into a 50L reaction chamber. The temperature is raised to 900dgrees C, resulting in the dry ice converting to gaseous CO2. For the following mixtures, determine whether the system is at equilibrium. If the system is not at equilibrium determine the amount of each species when equilibrium is established
a) 655g CaCO3, 95.0g CaO, P(CO2) = 2.55atm
b) 780g CaCO3, 31.00 g CaO, P(CO2)= 0.104

I know how to find the direction that the reaction needs to go to achieve equilibrium, but I don't know how to calculate the amount of each species when the equilibrium is achieved.