(a) Interpretation: The mass in grams of 10, 000, 000, 000 nitrogen molecules should be determined. Concept Introduction: Number of moles is equal to the ratio of given mass to the molar mass. The mathematical expression is given by: Number of moles = Given mass Molar mass Molar mass of the molecule is equal to the sum of the masses of atoms present in the molecule. The one mole of any substance is equal to the Avogadro number i.e. 6.022 × 10 23 atoms.

BuyFind

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781337399425
BuyFind

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781337399425

Solutions

Chapter 8, Problem 91AP
Interpretation Introduction

(a)

Interpretation:

The mass in grams of 10, 000, 000, 000 nitrogen molecules should be determined.

Concept Introduction:

Number of moles is equal to the ratio of given mass to the molar mass.

The mathematical expression is given by:

Number of moles = Given massMolar mass

Molar mass of the molecule is equal to the sum of the masses of atoms present in the molecule.

The one mole of any substance is equal to the Avogadro number i.e.6.022×1023 atoms.

Interpretation Introduction

(b)

Interpretation:

The mass in grams of 2.49×1020 carbon dioxide molecules should be determined.

Concept Introduction:

Number of moles is equal to the ratio of given mass to the molar mass.

The mathematical expression is given by:

Number of moles = Given massMolar mass

Molar mass of the molecule is equal to the sum of the masses of atoms present in the molecule.

The one mole of any substance is equal to the Avogadro number i.e.6.022×1023 atoms.

Interpretation Introduction

(c)

Interpretation:

The mass in grams of 7.0983 moles of sodium chloride should be determined.

Concept Introduction:

Number of moles is equal to the ratio of given mass to the molar mass.

The mathematical expression is given by:

Number of moles = Given massMolar mass

Molar mass of the molecule is equal to the sum of the masses of atoms present in the molecule.

The one mole of any substance is equal to the Avogadro number i.e.6.022×1023 atoms.

Interpretation Introduction

(d)

Interpretation:

The mass in grams of9.012×106 moles of 1, 2-dichloroethane should be determined.

Concept Introduction:

Number of moles is equal to the ratio of given mass to the molar mass.

The mathematical expression is given by:

Number of moles = Given massMolar mass

Molar mass of the molecule is equal to the sum of the masses of atoms present in the molecule.

The one mole of any substance is equal to the Avogadro number i.e.6.022×1023 atoms.

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