Chapter 8, Problem 12E

Interpretation Introduction

(a)

Interpretation:

The number of moles containing $\text{1}\text{.00}\times {\text{10}}^{\text{22}}$ atoms of cobalt, $\text{Co}$, 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 moles containing $2.00\times {10}^{23}$ molecules of carbon dioxide, ${\text{CO}}_{\text{2}}$, 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 moles containing $3.00\times {10}^{24}$ formula units of cobalt $\left(\text{II}\right)$ carbonate, ${\text{CoCO}}_{\text{3}}$, 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.