A lab technician adds 2.50 mL of a 0.00450 M stock solution

A lab technician adds 2.50 mL of a 0.00450 M stock solution

A lab technician adds 2.50 mL of a 0.00450 M stock solution of barium chloride to a test tube, then adds other solutions so that the total volume is 10.00 mL. In the absence of reactions, find a) the molarity of barium ion and b) the molarity of chloride ion.