Question

For the equilibrium
Br₂(g)+Cl₂(g)⇌2BrCl(g) at 400 K, Kc = 7.0.
If 0.25 mol of Br and 0.55 mol of Cl₂ are introduced into a 3.0L container at 400K
What will be the equilibrium concentrations of Br₂, Cl, and BrCl?