Question

You can identify a metal by carefully determining its density. A 8.44 g piece of an unknown metal is 1.25 cm long, 2.50 cm wide, and 1.00 cm thick. What is a possible identity of the element?Aluminum, 2.70 g/cm3Titanium, 4.54 g/cm3Zirconium, 6.51 g/cm3Chromium, 7.20 g/cm3Nickel, 8.90 g/cm3

Answer 1

Answer: Nickel

Step-by-step explanation:

They have the same density as each other

Answer 2

Answer: Aluminum,
`2.70 g/cm^3`

Step-by-step explanation:

Density is defined as the mass contained per unit volume. It is characteristic of a substance.

`Density=(mass)/(Volume)`

Given : Mass of object = 8.44 grams

Volume of object=
`length* breadth* height=1.25cm* 2.50cm* 1.0cm=3.125cm^3`

Putting in the values we get:

`Density=(8.44g)/(3.125cm^3)=2.70g/cm^3`

Thus density of the object will be
`2.70 g/cm^3` which matches that of aluminium.