Science Homework Help

Carbonyl bromide, COBr₂, decomposes to CO and Br₂ by the following simple, gas-phase, reaction: 

COBr2(g) ↔ Br2(g) + CO(g)

If a 1.1 liter flask is found to contain 0.018 mol of COBr₂ at equilibrium, what will be the equilibrium concentrations of CO and Br₂ in the same flask? The equilibrium constant for this reaction is K_c = 0.190.