# (a) Interpretation: The mass of iron(iii) oxide must be used to produce 25.69 g of iron should be calculated. Concept Introduction: It is important to recognize that the coefficients in a balanced equation give the relative number of molecules. Because atoms are not changed or destroyed in a chemical reaction one must always balance a chemical reaction. That is, one must choose the coefficients that gives the same number of each type of atoms on both sides, using the smallest set of integers. Number of moles of a substance is related to mass and molar mass as follows: n = m M Here, m is mass, M is molar mass.

### Introductory Chemistry: A Foundati...

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

### Introductory Chemistry: A Foundati...

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

#### Solutions

Chapter 9, Problem 96CP
Interpretation Introduction

## (a)Interpretation:The mass of iron(iii) oxide must be used to produce 25.69 g of iron should be calculated.Concept Introduction:It is important to recognize that the coefficients in a balanced equation give the relative number of molecules.Because atoms are not changed or destroyed in a chemical reaction one must always balance a chemical reaction. That is, one must choose the coefficients that gives the same number of each type of atoms on both sides, using the smallest set of integers.Number of moles of a substance is related to mass and molar mass as follows:n=mMHere, m is mass, M is molar mass.

Interpretation Introduction

### (b)Interpretation:The mass of aluminum that must be used to produce 25.69 g of iron should be calculated.Concept Introduction:It is important to recognize that the coefficients in a balanced equation give the relative number of molecules.Because atoms are not changed or destroyed in a chemical reaction one must always balance a chemical reaction. That is, one must choose the coefficients that gives the same number of each type of atoms on both sides, using the smallest set of integers.Number of moles of a substance is related to mass and molar mass as follows:n=mMHere, m is mass, M is molar mass.

Interpretation Introduction

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