(a) Interpretation: The number of moles in 2.45 g Fe 2 O 3 should be calculated. Concept Introduction: The total number of protons and number of neutrons of any element is called, atomic mass of that element. It is a decimal digit for example the atomic mass of H − 1 is 1.008 a m u . The molar mass of any element is the mass of 6.02 × 10 23 atoms or 1 mole of that element. The unit of molar mass is grams. Mass of any substance can be calculated as follows: Mass in gram = Number of moles × Molar mass Number of moles can be calculated as follows; Number of moles = mass in g molar mass .

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 9, Problem 15CR
Interpretation Introduction

(a)

Interpretation:

The number of moles in 2.45 g Fe2O3 should be calculated.

Concept Introduction:

The total number of protons and number of neutrons of any element is called, atomic mass of that element. It is a decimal digit for example the atomic mass of H is 1.008 amu.

The molar mass of any element is the mass of 6.02×1023 atoms or 1 mole of that element. The unit of molar mass is grams.

Mass of any substance can be calculated as follows:

Mass in gram = Number of moles×Molar mass

Number of moles can be calculated as follows;

Number of moles=mass in gmolarmass.

Interpretation Introduction

(b)

Interpretation:

The number of moles in 2.45 g of P4(s) should be calculated.

Concept Introduction:

The total number of protons and number of neutrons of any element is called, atomic mass of that element. It is a decimal digit for example the atomic mass of H is 1.008 amu.

The molar mass of any element is the mass of 6.02×1023 atoms or 1 mole of that element. The unit of molar mass is grams.

Mass of any substance can be calculated as follows:

Mass in gram = Number of moles×Molar mass

Number of moles can be calculated as follows;

Number of moles=mass in gmolarmass.

Interpretation Introduction

(c)

Interpretation:

The number of moles in 2.45 g of Cl2(g) should be calculated.

Concept Introduction:

The total number of protons and number of neutrons of any element is called, atomic mass of that element. It is a decimal digit for example the atomic mass of H is 1.008 amu.

The molar mass of any element is the mass of 6.02×1023 atoms or 1 mole of that element. The unit of molar mass is grams.

Mass of any substance can be calculated as follows:

Mass in gram = Number of moles×Molar mass

Number of moles can be calculated as follows;

Number of moles=mass in gmolarmass.

Interpretation Introduction

(d)

Interpretation:

The number of moles in 2.45 g of Hg2O(s) should be calculated.

Concept Introduction:

The total number of protons and number of neutrons of any element is called, atomic mass of that element. It is a decimal digit for example the atomic mass of H is 1.008 amu.

The molar mass of any element is the mass of 6.02×1023 atoms or 1 mole of that element. The unit of molar mass is grams.

Mass of any substance can be calculated as follows:

Mass in gram = Number of moles×Molar mass

Number of moles can be calculated as follows;

Number of moles=mass in gmolarmass.

Interpretation Introduction

(e)

Interpretation:

The number of moles in 2.45 g of HgO should be calculated.

Concept Introduction:

The total number of protons and number of neutrons of any element is called, atomic mass of that element. It is a decimal digit for example the atomic mass of H is 1.008 amu.

The molar mass of any element is the mass of 6.02×1023 atoms or 1 mole of that element. The unit of molar mass is grams.

Mass of any substance can be calculated as follows:

Mass in gram = Number of moles×Molar mass

Number of moles can be calculated as follows;

Number of moles=mass in gmolarmass.

Interpretation Introduction

(f)

Interpretation:

The number of moles in 2.45 g of Ca(NO3)2(s) should be calculated.

Concept Introduction:

The total number of protons and number of neutrons of any element is called, atomic mass of that element. It is a decimal digit for example the atomic mass of H is 1.008 amu.

The molar mass of any element is the mass of 6.02×1023 atoms or 1 mole of that element. The unit of molar mass is grams.

Mass of any substance can be calculated as follows:

Mass in gram = Number of moles×Molar mass

Number of moles can be calculated as follows;

Number of moles=mass in gmolarmass.

Interpretation Introduction

(g)

Interpretation:

The number of moles in 2.45 g of C3H8(g) should be calculated.

Concept Introduction:

The total number of protons and number of neutrons of any element is called, atomic mass of that element. It is a decimal digit for example the atomic mass of H is 1.008 amu.

The molar mass of any element is the mass of 6.02×1023 atoms or 1 mole of that element. The unit of molar mass is grams.

Mass of any substance can be calculated as follows:

Mass in gram = Number of moles×Molar mass

Number of moles can be calculated as follows;

Number of moles=mass in gmolarmass.

Interpretation Introduction

(h)

Interpretation:

The number of moles in 2.45 g of Al2(SO4)3(s) should be calculated.

Concept Introduction:

The total number of protons and number of neutrons of any element is called, atomic mass of that element. It is a decimal digit for example the atomic mass of H is 1.008 amu.

The molar mass of any element is the mass of 6.02×1023 atoms or 1 mole of that element. The unit of molar mass is grams.

Mass of any substance can be calculated as follows:

Mass in gram = Number of moles×Molar mass

Number of moles can be calculated as follows;

Number of moles=mass in gmolarmass.

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