When 50.0 mL of a 0.3000 M AgNO3 solution is added to 50 mL of a solution of MgCl2, and AgCl precipitate forms immediately. The precipitate is then filtered from the solution, dried, and weighed. If the recovered AgCl is found to have a mass of 0.1183 g, what is the concentration of the original MgCl2 solution