Calculate the final concentrations of K(aq), C2O4 2(aq), Ba2(aq),

Calculate the final concentrations of K(aq), C2O4 2(aq), Ba2(aq), and Br(aq) in a solution prepared by adding 0.100 L of 0.200 M K2C2O4 to 0.150 L of 0.250 M BaBr2. (For BaC2O4, Ksp 2.3  108 .)