Chapter 8, Problem 9E

Interpretation Introduction

(a)

Interpretation:

The number of particles in $\text{0}\text{.100 mol}$ magnesium atoms, $\text{Mg}$, is to be stated.

Concept introduction:

A mole is the amount of substance that has Avogadro’s number of particles. Avogadro’s number is equal to $\text{6}\text{.02}\times {\text{10}}^{\text{23}}$. Mathematically, the mole is the ratio of the mass and the molecular mass of the substances.

$\text{Mole}=\frac{\text{Mass}}{\text{Molecular mass}}$

One mole of atom or molecule is equal to $\text{6}\text{.02}\times {\text{10}}^{\text{23}}$ particles.

Interpretation Introduction

(b)

Interpretation:

The number of particles in $\text{0}\text{.200 mol}$ chlorine molecules, ${\text{Cl}}_{\text{2}}$, is to be stated.

Concept introduction:

A mole is the amount of substance that has Avogadro’s number of particles. Avogadro’s number is equal to $\text{6}\text{.02}\times {\text{10}}^{\text{23}}$. Mathematically, the mole is the ratio of the mass and the molecular mass of the substances.

$\text{Mole}=\frac{\text{Mass}}{\text{Molecular mass}}$

One mole of atom or molecule is equal to $\text{6}\text{.02}\times {\text{10}}^{\text{23}}$ particles.

Interpretation Introduction

(c)

Interpretation:

The number of particles in $\text{0}\text{.300 mol}$ magnesium chloride formula units, ${\text{MgCl}}_{\text{2}}$, is to be stated.

Concept introduction:

A mole is the amount of substance that has Avogadro’s number of particles. Avogadro’s number isequal to $\text{6}\text{.02}\times {\text{10}}^{\text{23}}$. Mathematically, the mole is the ratio of the mass and the molecular mass of the substances.

$\text{Mole}=\frac{\text{Mass}}{\text{Molecular mass}}$

One mole of atom or molecule is equal to $\text{6}\text{.02}\times {\text{10}}^{\text{23}}$ particles.