Chapter 3, Problem 114FP

Interpretation Introduction

(a)

Interpretation:

The area (in square meter) of water surface covered by a monolayer made from given molecule should be calculated.

Concept introduction:

The mathematical expression to determine the number of moles is:

$\text{number of mole = }\frac{\text{given mass of the molecule/element}}{\text{Molar Massof the molecule/element}}$

Interpretation Introduction

(b)

Interpretation:

The length of stearic acid molecule should be calculated in nanometers.

Concept introduction:

The relationship between mass and volume is:

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

Interpretation Introduction

(c)

Interpretation:

The approximate value of Avogadro’s number should be determined from the given data.

Concept introduction:

Avogadro’s number is the number of particles found in one mole of a substance. The value is approximately $\text{6}{\text{.022 × 10}}^{\text{23}}\text{ molecules}$.