Question

In an old trunk, you find a piece of metal that you think may be aluminum, silver, or lead. In lab, you find it has a mass of 192 g and a volume of 71.1 cm3 . Using the table, what is the metal you found?

Answer 1

Given mass of the metal , m = 192 g

volume of the metal , V = 71.1 cm³

                                  = 71.1 mL                   Since 1 mL = 1 cm³

We know that density , d = mass / volume

                                     = 192 g / 71.1 mL

                                    = 2.70 g/mL

From the table the metal whose density 2.70 g/mL is aluminium.

Therefore the density of the object is 0.738 g/mL