Chapter 2, Problem 2.108CQ

Interpretation Introduction

Interpretation:

‘Mass of ethanol’ should be identified.

Concept Introduction:

$0.\text{358} \text{pt}$ of mouthwash is present and we can convert $\text{pt}$ into $\text{mL}$ by using conversion factor.

It can be given as:$1\text{pt}=473.18\text{mL}$

And we have provided with density, from it we can calculate the mass of solute in a tube by using density as follows;

$\text{d}=\frac{\text{m}}{\text{v}}$

Given:

Mouthwash is $\text{21}\text{.6 \%}$ ethanol by mass

Volume of mouth wash =$0.\text{358 pt}$

$\text{d = 0}\text{.876}\frac{\text{g}}{\text{cc}}$