Chapter 8, Problem 111AP

Interpretation Introduction

(a)

Interpretation:

The molar mass of adipic acid $\left({\text{C}}_6{\text{H}}_{10}{\text{O}}_4\right)$ should be calculated.

Concept Introduction:

Molar mass refers to the mass of one mole of the compound. It is calculate by adding the mass of each atom of each element present in one molecule of a compound.

Answer to Problem 111AP

The molar mass of adipic acid $\left({\text{C}}_{\text{6}}{\text{H}}_{\text{10}}{\text{O}}_{\text{4}}\right)$ is 146.1 g/mol.

Explanation of Solution

Molar mass of adipic acid $\left({\text{C}}_{\text{6}}{\text{H}}_{\text{10}}{\text{O}}_{\text{4}}\right)$

$\begin{array}{l}=\left[6\left(\text{Atomic mass of C}\right)+10\left(\text{Atomic mass of H}\right)+4\left(\text{Atomic mass of O}\right)\right]\\ =\left[6\left(12.01\right)+10\left(1.008\right)+4\left(15.99\right)\right]\text{g/mol}\\ =146.\text{1 g/mol}\end{array}$

Here,

• Atomic mass of carbon = 12.01 g/mol.
• Atomic mass of hydrogen = 1.008 g/mol.
• Atomic mass of oxygen = 15.99 g/mol.

Interpretation Introduction

(b)

Interpretation:

The molar mass of caffeine $\left({\text{C}}_{\text{8}}{\text{H}}_{\text{10}}{\text{N}}_{\text{4}}{\text{O}}_2\right)$ should be calculated.

Concept Introduction:

Molar mass refers to the mass of one mole of the compound. It is calculate by adding the mass of each atom of each element present in one molecule of a compound.

Answer to Problem 111AP

The molar mass of caffeine $\left({\text{C}}_{\text{8}}{\text{H}}_{\text{10}}{\text{N}}_{\text{4}}{\text{O}}_2\right)$ is 194.1 g/mol.

Explanation of Solution

Molar mass of caffeine $\left({\text{C}}_{\text{8}}{\text{H}}_{\text{10}}{\text{N}}_{\text{4}}{\text{O}}_2\right)$

$\begin{array}{l}=\left[8\left(\text{atomic mass of C}\right)+10\left(\text{atomic mass of H}\right)+4\left(\text{atomic mass of N}\right)+2\left(\text{atomic mass of O}\right)\right]\\ =\left[8\left(12.01\right)+10\left(1.008\right)+4\left(14\right)+2\left(15.99\right)\right]\text{g/mol}\\ =194.\text{1 g/mol}\end{array}$

Here,

• Atomic mass of carbon = 12.01 g/mol.
• Atomic mass of hydrogen = 1.008 g/mol.
• Atomic mass of nitrogen = 14 g/mol.
• Atomic mass of oxygen = 15.99 g/mol.

Interpretation Introduction

(c)

Interpretation:

The molar mass of eicosane $\left({\text{C}}_{\text{20}}{\text{H}}_{\text{42}}\right)$ should be calculated.

Concept Introduction:

Molar mass refers to the mass of one mole of the compound. It is calculate by adding the mass of each atom of each element present in one molecule of a compound.

Answer to Problem 111AP

The molar mass of eicosane $\left({\text{C}}_{\text{20}}{\text{H}}_{\text{42}}\right)$ is 282.5 g/mol.

Explanation of Solution

Molar mass of eicosane $\left({\text{C}}_{\text{20}}{\text{H}}_{\text{42}}\right)$

$\begin{array}{l}=\left[20\left(\text{atomic mass of C}\right)+42\left(\text{atomic mass of H}\right)\right]\\ =\left[20\left(12.01\right)+42\left(1.008\right)\right]\text{g/mol}\\ =282.\text{5 g/mol}\end{array}$

Here,

• Atomic mass of carbon = 12.01 g/mol.
• Atomic mass of hydrogen = 1.008 g/mol.

Interpretation Introduction

(d)

Interpretation:

The molar mass of cyclohexanol $\left({\text{C}}_{\text{6}}{\text{H}}_{\text{11}}\text{OH}\right)$ should be calculated.

Concept Introduction:

Molar mass refers to the mass of one mole of the compound. It is calculate by adding the mass of each atom of each element present in one molecule of a compound.

Answer to Problem 111AP

The molar mass of cyclohexanol $\left({\text{C}}_{\text{6}}{\text{H}}_{\text{11}}\text{OH}\right)$ is 100.15 g/mol.

Explanation of Solution

Molar mass of cyclohexanol $\left({\text{C}}_{\text{6}}{\text{H}}_{\text{11}}\text{OH}\right)$

$\begin{array}{l}=\left[6\left(\text{Atomic mass of C}\right)+12\left(\text{Atomic mass of H}\right)+1\left(\text{Atomic mass of O}\right)\right]\\ =\left[6\left(12.01\right)+12\left(1.008\right)+1\left(15.99\right)\right]\text{g/mol}\\ =100.1\text{5 g/mol}\end{array}$

Here,

• Atomic mass of carbon = 12.01 g/mol.
• Atomic mass of hydrogen = 1.008 g/mol.
• Atomic mass of oxygen = 15.99 g/mol.

Interpretation Introduction

(e)

Interpretation:

The molar mass of vinyl acetate $\left({\text{C}}_{\text{4}}{\text{H}}_{\text{6}}{\text{O}}_{\text{2}}\right)$ should be calculated.

Concept Introduction:

Molar mass refers to the mass of one mole of the compound. It is calculate by adding the mass of each atom of each element present in one molecule of a compound.

Answer to Problem 111AP

The molar mass of vinyl acetate $\left({\text{C}}_{\text{4}}{\text{H}}_{\text{6}}{\text{O}}_{\text{2}}\right)$ is 86.09 g/mol.

Explanation of Solution

Molar mass of vinyl acetate $\left({\text{C}}_{\text{4}}{\text{H}}_{\text{6}}{\text{O}}_{\text{2}}\right)$

$\begin{array}{l}=\left[4\left(\text{Atomic mass of C}\right)+6\left(\text{Atomic mass of H}\right)+2\left(\text{Atomic mass of O}\right)\right]\\ =\left[4\left(12.01\right)+6\left(1.008\right)+2(15.99)\right]\text{ g/mol}\\ =86.09\text{ g/mol}\end{array}$

Here,

• Atomic mass of carbon = 12.01 g/mol.
• Atomic mass of hydrogen = 1.008 g/mol.
• Atomic mass of oxygen = 15.99 g/mol.

Interpretation Introduction

(f)

Interpretation:

The molar mass of dextrose $\left({\text{C}}_{\text{6}}{\text{H}}_{\text{12}}{\text{O}}_{\text{6}}\right)$ should be calculated.

Concept Introduction:

Molar mass refers to the mass of one mole of the compound. It is calculated by adding the mass of each atom of each element present in one molecule of a compound.

Answer to Problem 111AP

The molar mass of dextrose $\left({\text{C}}_{\text{6}}{\text{H}}_{\text{12}}{\text{O}}_{\text{6}}\right)$ is 180.1 g/mol.

Explanation of Solution

Molar mass of dextrose $\left({\text{C}}_6{\text{H}}_{12}{\text{O}}_6\right)$

$\begin{array}{l}=\left[\text{6}\left(\text{Atomic mass of C}\right)\text{+12}\left(\text{Atomic mass of H}\right)\text{+6}\left(\text{Atomic mass of O}\right)\right]\\ =\left[6\left(12.01\right)+12\left(1.008\right)+6(15.99)\right]\text{ g/mol }\\ =180.1\text{ g/mol}\end{array}$

Here,

• Atomic mass of carbon = 12.01 g/mol.
• Atomic mass of hydrogen = 1.008 g/mol.
• Atomic mass of oxygen = 15.99 g/mol.