Question

What is the identity of a sample that has a mass of 100.5 g and a volume of 7.42 cm3?

Answer 1

The answer will be mercury

Answer 2

Answer: The correct answer is Option 4.

Explanation:

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

$\text{Density of a substance}=\frac{\text{Mass of a substance}}{\text{Volume of a substance}}$

We are given:

Mass of sample = 100.5 g

Volume of sample = $7.42cm^3$

Putting values in above equation, we get:

$\text{Density of sample}=\frac{100.5g}{7.42cm^3}\\\\\text{Density of sample}=13.6g/cm^3$

The known density of the given metals are:

Density of lead = $11.34g/cm^3$

Density of iron = $7.87g/cm^3$

Density of gold = $19.32g/cm^3$

Density of mercury = $13.6g/cm^3$

The calculated density matches the given density of mercury.

Hence, the correct answer is Option 4.