Chapter 3, Problem 3.7P

(a)

Interpretation Introduction

Interpretation:

The element with higher molar mass is to be determined.

Concept introduction:

The molar mass of a substance is defined as the mass of one mole of a chemical entity. It is calculated as the summation of the product of the number of atoms of each element and the atomic mass of the respective element.

Higher the atomic mass, more be the molar mass of the substance.

(b)

Interpretation Introduction

Interpretation:

The element with more atoms per gram is to be determined.

Concept introduction:

The comparison of atomic masses and the number of atoms of any two or more entities are used to calculate the number of atom per gram.

(c)

Interpretation Introduction

Interpretation:

The element with fewer atoms per gram is to be determined.

Concept introduction:

The comparison of atomic masses and the number of atoms of any two or more entities are used to calculate the number of atom per gram.

(d)

Interpretation Introduction

Interpretation:

The element with more atoms per mole is to be determined.

Concept introduction:

One mole is defined as the amount of substance that contains the same number of entities such as molecules, ions, atoms as the number of atoms in $12\text{ g}$ of $\text{C-12}$. This number is called Avogadro’s number. The value of Avogadro’s number is $\text{6}\text{.022}\times {\text{10}}^{23}\left(\text{entitites/mol}\right)$. The number of atom per mole of the substance is $6.022\times {10}^{23}$.