Chapter 8, Problem 20E

Interpretation Introduction

(a)

Interpretation:

The number of particles in $\text{7}\text{.57}\text{g}$ platinum $\text{Pt}$ is to be calculated.

Concept introduction:

One mole of atoms, molecules or particles is defined as a quantity whose mass is equivalent to its gram atomic mass or molecular mass. One mole of any substance possesses fixed Avogadro’s number, which is equivalent to $\text{6}{\text{.022×10}}^{\text{23}}$ atoms.

Interpretation Introduction

(b)

Interpretation:

The number of particles in $\text{3}\text{.88}\text{g}$ ethane ${\text{C}}_{\text{2}}{\text{H}}_{\text{6}}$ is to be calculated.

Concept introduction:

One mole of atoms, molecules or particles is defined as a quantity whose mass is equivalent to its gram atomic mass or molecular mass. One mole of any substance possesses fixed Avogadro’s number, which is equivalent to $\text{6}{\text{.022×10}}^{\text{23}}$ atoms.

Interpretation Introduction

(c)

Interpretation:

The number of particles in $\text{0}\text{.152}\text{g}$ aluminum chloride ${\text{AlCl}}_{\text{3}}$ is to be calculated.

Concept introduction:

One mole of atoms, molecules or particles is defined as a quantity whose mass is equivalent to its gram atomic mass or molecular mass. One mole of any substance possesses fixed Avogadro’s number, which is equivalent to $\text{6}{\text{.022×10}}^{\text{23}}$ atoms.