Question

In an old trunk, you find a piece of metal that you think may be aluminum, silver, or lead. you take it to a lab, where you find it has a mass of 114 g and a volume of 10.9 cm3. what is the metal you found? assume that densities of aluminium, silver, and lead are 2.70, 10.5, and 11.3 g/ml, respectively.

Answer 1

Answer: The metal found is silver.

Step-by-step explanation:

To calculate density of a substance, we use the equation:

`\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}`

We are given:

Mass of object = 114 g

Volume of object =
`10.9cm^3=10.9mL` (Conversion factor:
`1cm^3=1mL` )

Putting values in above equation, we get:

`\text{Density of object}=(114g)/(10.9mL)=10.5g/mL`

The calculated value of density matches the density of silver.

Hence, the metal found is silver.