Answered

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

Verified Answer :

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Calculate the density:

\(m=8.97 \ g \\ V=0.79 \ cm^3 \\ \\ \rho=\frac{m}{V}=\frac{8.79 \ g}{0.79 \ cm^3} \approx 11.35 \ \frac{g}{cm^3}\)

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

Answer: The correct option is Option C.

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:

\(Density=\frac{Mass}{Volume}\)

We are given:

Mass of the sample = 8.97 g

Volume of the sample = \(0.79cm^3\)

Putting values in above equation, we get:

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

This value of density matches the specific density of lead.

Hence, the correct option is Option C.

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