3. A student was given an unknown metal. The student determined that the mass of the metal was 30.2 g. The student placed the

metal in a graduated cylinder filled with 20,0 mL of water. The metal increased the volume of water to 22,0 ml. Calculate the

density of the metal and determine the identity of the metal using the table below.

Metal

Density (g/mL)

Lead

11.3

Silver

10.5

Nickel

9.90

Zinc

7.14

0/10000 Word

15.1 g/mL

Explanation:

The density of a substance is defined as the ratio of the mass of the substance and the volume of the substance. Mathematically, it is expressed as:

Density = mass in grams/volume in mL

In this case, the mass of the metal = 30.2 g

Volume of the metal = volume of water displaced by the metal.

The volume of water displaced by the metal can be calculated as the final volume of water after placing the metal - initial volume of water before placing the metal.

Hence, volume of metal = 22.0 - 20.0 mL = 2.0 mL

Density of metal = 30.2/2.0 = 15.1 g/mL

The density of the metal is 15.1 g/mL

The identity of the metal is not in the table.