Question

What is the identity of a sample that has a mass of 8.97 g and a volume of 0.79 cm3?

A.copper
B.gold
C.lead
D.iron

Answer 1

Calculate the density:


`m=8.97 \ g \\ V=0.79 \ cm^3 \\ \\ \rho=(m)/(V)=(8.79 \ g)/(0.79 \ cm^3) \approx 11.35 \ (g)/(cm^3)`

It's the density of lead, so the answer is C.

Answer 2

Answer: The correct option is Option C.

Step-by-step explanation:

To identify the sample, we will determine the density of the unknown sample and match it with the specific densities. The equation used to calculate the density of a sample is given by:

`Density=(Mass)/(Volume)`

We are given:

Mass of the sample = 8.97 g

Volume of the sample =
`0.79cm^3`

Putting values in above equation, we get:

`\text{Density of the sample}=(8.97g)/(0.79cm^3)=11.35g/cm^3`

This value of density matches the specific density of lead.

Hence, the correct option is Option C.