Chapter 3, Problem 3.103P

(a)

Interpretation Introduction

Interpretation:

Whether the change in the definition of an atomic mass unit $\left(\text{amu}\right)$ leads to any change in Avogadro’s number is to be determined.

Concept introduction:

Avogadro's number is defined as the number of particles (which may be atoms, molecules or ions) that are present in one mole of any given substance. The definition was put forward by Amedeo Avogadro.

One mole, the SI unit for amount of substance, contains exactly $6.02214076\times {\text{10}}^{23}\text{entities}$. This number of entities are equivalent to Avogadro's number.

(b)

Interpretation Introduction

Interpretation:

Whether the change in the definition of Avogadro’s number also leads to change in the definition of the mole is to be determined.

Concept introduction:

Avogadro's number is defined as the number of particles (which may be atoms, molecules or ions) that are present in one mole of any given substance. The definition was put forward by Amedeo Avogadro.

One mole, the SI unit for amount of substance, contains exactly $6.02214076\times {\text{10}}^{23}\text{entities}$. This number of entities are equivalent to Avogadro's number.

(c)

Interpretation Introduction

Interpretation:

Whether the change in the definition of the atomic mass unit also leads to change in the definition of the mass of one mole is to be determined.

Concept introduction:

Avogadro's number is defined as the number of particles (which may be atoms, molecules or ions) that are present in one mole of any given substance. The definition was put forward by Amedeo Avogadro.

One mole, the SI unit for amount of substance, contains exactly $6.02214076\times {\text{10}}^{23}\text{entities}$. This number of entities are equivalent to Avogadro's number.

(d)

Interpretation Introduction

Interpretation:

Whether the value of Avogadro's number up to three significant figures $6.02214076\times {\text{10}}^{23}$ was the same as during the 1960s as it is today is to be determined.

Concept introduction:

Avogadro's number is defined as the number of particles (which may be atoms, molecules or ions) that are present in one mole of any given substance. The definition was put forward by Amedeo Avogadro.

One mole, the SI unit for amount of substance, contains exactly $6.022614076\times {\text{10}}^{23}\text{entities}$. This number of entities is equivalent to Avagadro’s number.