The age of the lunar rock needs to be determined. Concept introduction: All radioactive reactions are first order thus the integrated rate law can be represented as follows: ln [ A ] t [ A ] 0 = − λ t Also, for first order reaction, the relation between half-life time and decay constant is as follows: λ = 0.6932 t 1 / 2 Here, t 1 / 2 for the reaction in which the concentration of reactant becomes half of its initial value.

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Answer 1

Question

Chapter 25, Problem 31E

Interpretation Introduction

Interpretation:

The age of the lunar rock needs to be determined.

Concept introduction:

All radioactive reactions are first order thus the integrated rate law can be represented as follows:

ln[A]t[A]0=−λt

Also, for first order reaction, the relation between half-life time and decay constant is as follows:

λ=0.6932t1/2

Here, t1/2 for the reaction in which the concentration of reactant becomes half of its initial value.

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Answer 2

Question

Chapter 25, Problem 31E

Interpretation Introduction

Interpretation:

The age of the lunar rock needs to be determined.

Concept introduction:

All radioactive reactions are first order thus the integrated rate law can be represented as follows:

ln[A]t[A]0=−λt

Also, for first order reaction, the relation between half-life time and decay constant is as follows:

λ=0.6932t1/2

Here, t1/2 for the reaction in which the concentration of reactant becomes half of its initial value.

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Answer 3

Question

Chapter 25, Problem 31E

Interpretation Introduction

Interpretation:

The age of the lunar rock needs to be determined.

Concept introduction:

All radioactive reactions are first order thus the integrated rate law can be represented as follows:

ln[A]t[A]0=−λt

Also, for first order reaction, the relation between half-life time and decay constant is as follows:

λ=0.6932t1/2

Here, t1/2 for the reaction in which the concentration of reactant becomes half of its initial value.

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Answer 4

Question

Chapter 25, Problem 31E

Interpretation Introduction

Interpretation:

The age of the lunar rock needs to be determined.

Concept introduction:

All radioactive reactions are first order thus the integrated rate law can be represented as follows:

ln[A]t[A]0=−λt

Also, for first order reaction, the relation between half-life time and decay constant is as follows:

λ=0.6932t1/2

Here, t1/2 for the reaction in which the concentration of reactant becomes half of its initial value.

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Answer 5

Chapter 25, Problem 31E

Interpretation Introduction

Interpretation:

The age of the lunar rock needs to be determined.

Concept introduction:

All radioactive reactions are first order thus the integrated rate law can be represented as follows:

ln[A]t[A]0=−λt

Also, for first order reaction, the relation between half-life time and decay constant is as follows:

λ=0.6932t1/2

Here, t1/2 for the reaction in which the concentration of reactant becomes half of its initial value.

Answer 6

Chapter 25, Problem 31E

Interpretation Introduction

Interpretation:

The age of the lunar rock needs to be determined.

Concept introduction:

All radioactive reactions are first order thus the integrated rate law can be represented as follows:

ln[A]t[A]0=−λt

Also, for first order reaction, the relation between half-life time and decay constant is as follows:

λ=0.6932t1/2

Here, t1/2 for the reaction in which the concentration of reactant becomes half of its initial value.

Answer 7

Chapter 25, Problem 31E

Interpretation Introduction

Interpretation:

The age of the lunar rock needs to be determined.

Concept introduction:

All radioactive reactions are first order thus the integrated rate law can be represented as follows:

ln[A]t[A]0=−λt

Also, for first order reaction, the relation between half-life time and decay constant is as follows:

λ=0.6932t1/2

Here, t1/2 for the reaction in which the concentration of reactant becomes half of its initial value.

Answer 8

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Answer 9

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Answer 10

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Answer 11

Ch. 25 - Prob. 1E Ch. 25 - Prob. 2E Ch. 25 - Prob. 3E Ch. 25 - Prob. 4E Ch. 25 - Prob. 5E Ch. 25 - Prob. 6E Ch. 25 - Prob. 7E Ch. 25 - Prob. 8E Ch. 25 - Prob. 9E Ch. 25 - Prob. 10E

Solution Summary: The author explains that all radioactive reactions are first order, so the integrated rate law can be represented as follows.

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Chapter 25 Solutions