(a) Interpretation: The fraction of Sr-90 remains after three half-lives needs to be determined, if the half-life of Sr-90 is 29 years. Concept introduction: The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

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Answer 1

Question

Chapter 20, Problem 20.60SP

Interpretation Introduction

(a)

Interpretation:

The fraction of Sr-90 remains after three half-lives needs to be determined, if the half-life of Sr-90 is 29 years.

Concept introduction:

The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

Interpretation Introduction

(b)

Interpretation:

Thevalue of decay constant needs to be determined, if the half-life of Sr-90 is 29 years.

Concept introduction:

The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

Interpretation Introduction

(c)

Interpretation:

The years required for 99% of the Sr-90 to disappear needs to be determined.

Concept introduction:

The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

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The IR (infrared) spectra of two pure compounds (0.010 M compound A in solvent and 0.010 M compound B in solvent) are given. The pathlength of the cell is 1.00 cm. The y-axis in the spectra is transmittance rather than absorption, so that the wavenumbers at which there is a dip in the curve correspond to absorption peaks. A mixture of A and B in unknown concentrations gave a percent transmittance of 49.8% at 2976 cm¹ and 44.9% at 3030 cm-1 Wavenumber 0.010 M A 0.010 M B Unknown 3030 cm-1 35.0% 93.0% 44.9% 2976 cm-¹ 76.0% 42.0% 49.8% What are the concentrations of A and B in the unknown sample? Transmittance (%) 100 90 80 70 60 50 40 2976 cm-1 30 3030 cm-1 20 Pure A 10 Pure B 0 3040 2990 Wavenumber (cm-1) 2940 2890

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Answer 2

Question

Chapter 20, Problem 20.60SP

Interpretation Introduction

(a)

Interpretation:

The fraction of Sr-90 remains after three half-lives needs to be determined, if the half-life of Sr-90 is 29 years.

Concept introduction:

The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

Interpretation Introduction

(b)

Interpretation:

Thevalue of decay constant needs to be determined, if the half-life of Sr-90 is 29 years.

Concept introduction:

The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

Interpretation Introduction

(c)

Interpretation:

The years required for 99% of the Sr-90 to disappear needs to be determined.

Concept introduction:

The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

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Answer 3

Question

Chapter 20, Problem 20.60SP

Interpretation Introduction

(a)

Interpretation:

The fraction of Sr-90 remains after three half-lives needs to be determined, if the half-life of Sr-90 is 29 years.

Concept introduction:

The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

Interpretation Introduction

(b)

Interpretation:

Thevalue of decay constant needs to be determined, if the half-life of Sr-90 is 29 years.

Concept introduction:

The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

Interpretation Introduction

(c)

Interpretation:

The years required for 99% of the Sr-90 to disappear needs to be determined.

Concept introduction:

The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

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Answer 4

Question

Chapter 20, Problem 20.60SP

Interpretation Introduction

(a)

Interpretation:

The fraction of Sr-90 remains after three half-lives needs to be determined, if the half-life of Sr-90 is 29 years.

Concept introduction:

The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

Interpretation Introduction

(b)

Interpretation:

Thevalue of decay constant needs to be determined, if the half-life of Sr-90 is 29 years.

Concept introduction:

The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

Interpretation Introduction

(c)

Interpretation:

The years required for 99% of the Sr-90 to disappear needs to be determined.

Concept introduction:

The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

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Answer 5

Chapter 20, Problem 20.60SP

Interpretation Introduction

(a)

Interpretation:

The fraction of Sr-90 remains after three half-lives needs to be determined, if the half-life of Sr-90 is 29 years.

Concept introduction:

The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

Interpretation Introduction

(b)

Interpretation:

Thevalue of decay constant needs to be determined, if the half-life of Sr-90 is 29 years.

Concept introduction:

The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

Interpretation Introduction

(c)

Interpretation:

The years required for 99% of the Sr-90 to disappear needs to be determined.

Concept introduction:

The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

Answer 6

Chapter 20, Problem 20.60SP

Interpretation Introduction

(a)

Interpretation:

The fraction of Sr-90 remains after three half-lives needs to be determined, if the half-life of Sr-90 is 29 years.

Concept introduction:

The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

Answer 7

Chapter 20, Problem 20.60SP

Interpretation Introduction

(a)

Interpretation:

The fraction of Sr-90 remains after three half-lives needs to be determined, if the half-life of Sr-90 is 29 years.

Concept introduction:

The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

Answer 8

Interpretation Introduction

(b)

Interpretation:

Thevalue of decay constant needs to be determined, if the half-life of Sr-90 is 29 years.

Concept introduction:

The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

Answer 9

Interpretation Introduction

(b)

Interpretation:

Thevalue of decay constant needs to be determined, if the half-life of Sr-90 is 29 years.

Concept introduction:

The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

Answer 10

Interpretation Introduction

(c)

Interpretation:

The years required for 99% of the Sr-90 to disappear needs to be determined.

Concept introduction:

The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

Answer 11

Interpretation Introduction

(c)

Interpretation:

The years required for 99% of the Sr-90 to disappear needs to be determined.

Concept introduction:

The nuclear reactions are a type of chemical processes which lead to the formation of some new nuclei with the emission of certain particles. Usually alpha or beta particles, or gamma rays are emitted as a side product with some new daughter nuclei. The nuclei which shows spontaneous decay with time are called as radioactive nuclei. The radioactive decay follows the first order kinetic and the half-life is inversely proportional to the decay constant of the radioactive decay.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 20 - Prob. 20.1P Ch. 20 - Prob. 20.2A Ch. 20 - Prob. 20.3P Ch. 20 - Prob. 20.4A Ch. 20 - Prob. 20.5P Ch. 20 - Prob. 20.6P Ch. 20 - What is the half-life of iron 59 , a radioisotope...Ch. 20 - Prob. 20.8A Ch. 20 - Prob. 20.9P Ch. 20 - Prob. 20.10A

Solution Summary: The author explains that the tion of Sr-90 remains after three half-lives needs to be determined. Nuclear reactions lead to the formation of some new nuclei with the emission of certain particles.

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