help me out and pleas check u works
A 3.00-L vessel contained 9.10×10-2 mol of gaseous PCl3, 9.48×10-2 mol of gaseous PCl5, and 8.80×10-2 mol of Cl2 gas at equilibrium at 242°C.
Calculate the value of Keq (expressed in terms of the molar concentrations) for the reaction
PCl3(g) + Cl2(g) PCl5(g)