Chapter 5, Problem 68P

Interpretation Introduction

(a)

Interpretation:

Number of moles in $5.00\times {10}^9$ molecules of pentane ( ${\text{C}}_5{\text{H}}_{12}$ ) is to be determined.

Concept Introduction:

Following is the formula that will be used to calculate the number of moles of the substance −

  $numberofmoles=\frac{numberofmolecules}{Avogadro\text{'}snumber}$

Interpretation Introduction

(b)

Interpretation:

Number of moles in $6.51\times {10}^{28}$ molecules of pentane ( ${\text{C}}_5{\text{H}}_{12}$ ) is to be determined.

Concept Introduction:

Following is the formula that will be used to calculate the number of moles of the substance −

  $numberofmoles=\frac{numberofmolecules}{Avogadro\text{'}snumber}$

Interpretation Introduction

(c)

Interpretation:

Number of moles in $8.32\times {10}^{21}$ molecules of pentane ( ${\text{C}}_5{\text{H}}_{12}$ ) is to be determined.

Concept Introduction:

Following is the formula that will be used to calculate the number of moles of the substance −

  $numberofmoles=\frac{numberofmolecules}{Avogadro\text{'}snumber}$

Interpretation Introduction

(d)

Interpretation:

Number of moles in $3.10\times {10}^{20}$ molecules of pentane ( ${\text{C}}_5{\text{H}}_{12}$ ) is to be determined.

Concept Introduction:

Following is the formula that will be used to calculate the number of moles of the substance −

  $numberofmoles=\frac{numberofmolecules}{Avogadro\text{'}snumber}$