Chapter 8, Problem 10E

Interpretation Introduction

(a)

Interpretation:

The number of particles in $\text{0}\text{.250 mol}$ calcium atoms, $\text{Ca}$, 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 atoms or molecules is equal to $\text{6}\text{.02}\times {\text{10}}^{\text{23}}$ particles.

Interpretation Introduction

(b)

Interpretation:

The number of particles in $\text{0}\text{.500 mol}$ fluorine molecules, ${\text{F}}_{\text{2}}$, 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 atoms or molecules is equal to $\text{6}\text{.02}\times {\text{10}}^{\text{23}}$ particles.

Interpretation Introduction

(c)

Interpretation:

The number of particles in $\text{0}\text{.300 mol}$ calcium fluoride formula units, ${\text{CaF}}_{\text{2}}$ 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 atoms or molecules is equal to $\text{6}\text{.02}\times {\text{10}}^{\text{23}}$ particles.