If you were to prepare a 1.00 m solution of {\rm CaCl_2} beginning with water at 22.5^\circ {\rm C}, what would the final temperature of the solution...

If you were to prepare a 1.00 m solution of {rm CaCl_2} beginning with water at 22.5^circ {rm C}, what would the final temperature of the solution be (in ^circ {rm C})? Assume that the specific heats of both pure {rm H_2O} and the solution are the same, 4.18 {rm J/ left(K cdot g right)}.