hello, i am stuck on a couple question can you help me please.

suppose that you completely dissolved a rounded tablespoon (1.00cm^3) of table salt in 50.0 mL of deionized water in a graduated cylinder. In another graduated cylinder with 50.0 mL of deionized water, you slid in a 1.00 cm^3 piece of aluminum metal. would you expect the water level to rise the same amount in both cylinders? Explain.

and

would the density of the salt water be greater or less than the same volume of deionized water? Explain.