Chapter 8, Problem 8E

Interpretation Introduction

(a)

Interpretation:

The number of moles represented by $\text{6}\text{.02}\times {\text{10}}^{\text{23}}$ atoms of selenium 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 represented by $\text{6}\text{.02}\times {\text{10}}^{\text{23}}$ molecules of selenium dioxide 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.