Chapter 3, Problem 3.9P

(a)

Interpretation Introduction

Interpretation:

The molar mass of ${\left({\text{NH}}_4\right)}_3{\text{PO}}_4$ is to be calculated.

Concept introduction:

The mass of a mole of the entities (atoms, molecules, or formula units) of a substance that has units of $\text{g/mol}$ is called molar mass $\left(\text{M}\right)$. The sum of the molar masses of each atom in the formula is called the molar mass of a compound. The molar mass of a compound is calculated by adding the molar mass of each element multiplied by its number of atoms present in the chemical formula.

(b)

Interpretation Introduction

Interpretation:

The molar mass of $\text{CH}{\text{2}}_{}{\text{Cl}}_{\text{2}}$ is to be calculated.

Concept introduction:

The mass of a mole of the entities (atoms, molecules, or formula units) of a substance that has units of $\text{g/mol}$ is called molar mass $\left(\text{M}\right)$. The sum of the molar masses of each atom in the formula is called the molar mass of a compound. The molar mass of a compound is calculated by adding the molar mass of each element multiplied by its number of atoms present in the chemical formula.

(c)

Interpretation Introduction

Interpretation:

The molar mass of ${\text{CuSO}}_{\text{4}}.5{\text{H}}_2\text{O}$ is to be calculated.

Concept introduction:

The mass of a mole of the entities (atoms, molecules, or formula units) of a substance that has units of $\text{g/mol}$ is called molar mass $\left(\text{M}\right)$. The sum of the molar masses of each atom in the formula is called the molar mass of a compound. The molar mass of a compound is calculated by adding the molar mass of each element multiplied by its number of atoms present in the chemical formula.

(d)

Interpretation Introduction

Interpretation:

The molar mass of ${\text{BrF}}_3$ is to be calculated.

Concept introduction:

The mass of a mole of the entities (atoms, molecules, or formula units) of a substance that has units of $\text{g/mol}$ is called molar mass $\left(\text{M}\right)$. The sum of the molar masses of each atom in the formula is called the molar mass of a compound. The molar mass of a compound is calculated by adding the molar mass of each element multiplied by its number of atoms present in the chemical formula.