Chapter 3, Problem 97IAE

Interpretation Introduction

(a)

Interpretation:

The number of molecules of ${\text{CHCl}}_3$ present in $350\text{mL}$ of water that contains $0.8\text{ ppb}$ by mass of chloroform is to be calculated.

Concept introduction:

The mass per unit volume is known as the density. The formula to calculate the density is as follows:

$\text{Density}=\frac{\text{Mass}}{\text{Volume}}$

Interpretation Introduction

(b)

Interpretation:

Whether the molecules of ${\text{CHCl}}_3$ calculated is detectable on the ordinary analytical balance that measures mass with a precision of $\pm 0.0001\text{g}$ or not should be determined.

Concept introduction:

The formula to calculate the mass of a compound is as follows:

$\text{Mass}\text{of compound}=\left(\text{Moles of compound}\right)\left(\text{molecular mass of compound}\right)$