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3 years ago

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

Chemistry

2 answers:

ElenaW [278]3 years ago

5 0

The answer will be mercury

yawa3891 [41]3 years ago

3 0

<u>Answer:</u> The correct answer is Option 4.

<u>Explanation:</u>

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.

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n = PV / RT

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P = Pressure

V = Volume

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T = Temperature in K

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P = 735 / 760 = 0.967 atm

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1 year ago

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<h3>Further explanation</h3>

Reaction

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