Glucose (molar mass=180.16 g/mol) is a simple, soluble sugar. Glucose solutions are used to treat patients with low blood sugar. Suppose you prepare a glucose solution using the described procedure.

Step 1: Dissolve 221.6 g of glucose in enough water to make 500.0 mL of solution.

Step 2: Transfer 16.8 mL of the solution to a new flask and add enough water to make 250.0 mL of dilute solution.

What is the concentration (in M) of the glucose solution at the end of the procedure?