Question

In an old trunk, you find a cube of metal that you think may be aluminum, silver, lead, cobalt or tin. In lab you find that it has a mass of 222 g and a length of 2.7 cm. What is the metal? The density of each metal is given below at room temperature. O Lead (11.3 g/cm) O Silver (10.5 g/cm) Cobalt (8.90 g/cm) O Tin (7.31g/cm) Aluminum (2.70 g/cm)

Answer 1

Answer:

The density of old trunk is $11.3 g/cm^3$ and it is equal to the density of metal lead.

Explanation:

Mass of the trunk , m= 222 g

Length of the cubic trunk = 2.7 cm

Volume of the cube = $a^3$

Density of the truck = $\frac{Mass}{Volume}$

$D=\frac{m}{a^3}=\frac{222 g}{(2.7 cm)^3}=11.2787 g/cm^3\approx 11.3 g/cm^3$

The density of old trunk is $11.3 g/cm^3$ and it is equal to the density of metal lead.