Chapter 1, Problem 72P

Interpretation Introduction

(a)

Interpretation:

The specific gravity of mercury is to be calculated.

Concept introduction:

Specific gravity can be defined as ratio of density of a specific sample to density of water. If a sample has specific gravity greater than $1$ that means sample is dense than water and if sample has specific gravity lesser than $1$ that means sample is less dense than water.

Specific gravity can be represented as,

  $SG=\frac{{\rho }_{\text{sample}}}{{\rho }_{{\text{H}}_2\text{O}}}$

Where,

• ${\rho }_{\text{sample}}$ is a density of sample.
• ${\rho }_{{\text{H}}_2\text{O}}$ is a density of ${\text{H}}_{\text{2}}\text{O}$ .

It is a unitless quantity.

Interpretation Introduction

(b)

Interpretation:

Density of ethanol is to be calculated.

Concept introduction:

Specific gravity can be defined as ratio of density of a specific sample to density of water. If a sample hasspecific gravity greater than $1$ that means sample is dense than water and if sample has specific gravity lesser than $1$ that means sample is less dense than water.

Specific gravity can be represented as,

  $SG=\frac{{\rho }_{\text{sample}}}{{\rho }_{{\text{H}}_2\text{O}}}$

Where,

• ${\rho }_{\text{sample}}$ is a density of sample.
• ${\rho }_{{\text{H}}_2\text{O}}$ is a density of ${\text{H}}_{\text{2}}\text{O}$ .

It is a unitless quantity.