Molecular structures of the given organophosphorus insecticides should be determined. Concept introduction: Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

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Answer 1

Question

Chapter 28.6, Problem 28.12P

(a)

Interpretation Introduction

Interpretation:

Molecular structures of the given organophosphorus insecticides should be determined.

Concept introduction:

Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

(b)

Interpretation Introduction

Interpretation:

The suitable insecticide which can be used in our garden should be determined from the given organophosphate insecticide and the correct reason for choosing that insecticide should be given.

Concept introduction:

Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

LD₅₀ represents the individual dose required to kill 50 percent of a population of test animals and it is a n index determination of medicine and poison’s virulence.

Lower the LD₅₀ dose, the more toxic the pesticide.

(c)

Interpretation Introduction

Interpretation:

The insecticide which is most dangerous for mammals to ingest should be determined from the given organophosphate insecticides. And the correct reason for choosing that insecticide should be given.

Concept introduction:

Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

LD₅₀ represents the individual dose required to kill 50 percent of a population of test animals and it is a n index determination of medicine and poison’s virulence.

Lower the LD₅₀ dose, the more toxic the pesticide.

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(a) Cholesterol isolated from natural sources is enantiopure. The observed rotation of a 0.3-g sample of cholesterol in 15 mL of chloroform solution contained in a 10-cm polarimeter tube is −0.78°. Calculate the specific rotation of cholesterol. (b) A sample of synthetic cholesterol consisting entirely of (+)-cholesterol was mixed with some natural (−)-cholesterol. The specific rotation of the mixture was −13°. What fraction of the mixture was (+)-cholesterol?

Mixtures of amino acids can be analyzed by first separating the mixture into its components through ion‑exchange chromatography. Amino acids placed on a cation‑exchange resin containing sulfonate (−SO−3)(−SO3−) groups flow down the column at different rates because of two factors that influence their movement: (1) ionic attraction between the sulfonate residues on the column and positively charged functional groups on the amino acids, and (2) aggregation of nonpolar amino acid side chains with the hydrophobic backbone of the polystyrene resin. Note that the ionic attraction is more important than hydrophobicity for this column media. For each pair of amino acids, identify which will be eluted first from a cation‑exchange column using a pH 7.0pH 7.0 buffer.

Mixtures of amino acids can be analyzed by first separating the mixture into its components through ionexchange chromatography. Amino acids placed on a cation-exchange resin containing sulfonate ( -SO3-) groups flow down the column at different rates because of two factors that influence their movement: (1) ionic attraction between the sulfonate residues on the column and positively charged functional groups on the amino acids, and (2) aggregation of nonpolar amino acid side chains with the hydrophobic backbone of the polystyrene resin. For each pair of amino acids listed, determine which will be eluted first from the cation-exchange column by a pH 7.0 buffer. (a) Aspartate and lysine (b) Arginine and methionine(c) Glutamate and valine (d) Glycine and leucine (e) Serine and alanine

Answer 2

Question

Chapter 28.6, Problem 28.12P

(a)

Interpretation Introduction

Interpretation:

Molecular structures of the given organophosphorus insecticides should be determined.

Concept introduction:

Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

(b)

Interpretation Introduction

Interpretation:

The suitable insecticide which can be used in our garden should be determined from the given organophosphate insecticide and the correct reason for choosing that insecticide should be given.

Concept introduction:

Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

LD₅₀ represents the individual dose required to kill 50 percent of a population of test animals and it is a n index determination of medicine and poison’s virulence.

Lower the LD₅₀ dose, the more toxic the pesticide.

(c)

Interpretation Introduction

Interpretation:

The insecticide which is most dangerous for mammals to ingest should be determined from the given organophosphate insecticides. And the correct reason for choosing that insecticide should be given.

Concept introduction:

Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

LD₅₀ represents the individual dose required to kill 50 percent of a population of test animals and it is a n index determination of medicine and poison’s virulence.

Lower the LD₅₀ dose, the more toxic the pesticide.

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Answer 3

Question

Chapter 28.6, Problem 28.12P

(a)

Interpretation Introduction

Interpretation:

Molecular structures of the given organophosphorus insecticides should be determined.

Concept introduction:

Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

(b)

Interpretation Introduction

Interpretation:

The suitable insecticide which can be used in our garden should be determined from the given organophosphate insecticide and the correct reason for choosing that insecticide should be given.

Concept introduction:

Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

LD₅₀ represents the individual dose required to kill 50 percent of a population of test animals and it is a n index determination of medicine and poison’s virulence.

Lower the LD₅₀ dose, the more toxic the pesticide.

(c)

Interpretation Introduction

Interpretation:

The insecticide which is most dangerous for mammals to ingest should be determined from the given organophosphate insecticides. And the correct reason for choosing that insecticide should be given.

Concept introduction:

Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

LD₅₀ represents the individual dose required to kill 50 percent of a population of test animals and it is a n index determination of medicine and poison’s virulence.

Lower the LD₅₀ dose, the more toxic the pesticide.

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Answer 4

Question

Chapter 28.6, Problem 28.12P

(a)

Interpretation Introduction

Interpretation:

Molecular structures of the given organophosphorus insecticides should be determined.

Concept introduction:

Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

(b)

Interpretation Introduction

Interpretation:

The suitable insecticide which can be used in our garden should be determined from the given organophosphate insecticide and the correct reason for choosing that insecticide should be given.

Concept introduction:

Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

LD₅₀ represents the individual dose required to kill 50 percent of a population of test animals and it is a n index determination of medicine and poison’s virulence.

Lower the LD₅₀ dose, the more toxic the pesticide.

(c)

Interpretation Introduction

Interpretation:

The insecticide which is most dangerous for mammals to ingest should be determined from the given organophosphate insecticides. And the correct reason for choosing that insecticide should be given.

Concept introduction:

Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

LD₅₀ represents the individual dose required to kill 50 percent of a population of test animals and it is a n index determination of medicine and poison’s virulence.

Lower the LD₅₀ dose, the more toxic the pesticide.

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Answer 5

Chapter 28.6, Problem 28.12P

(a)

Interpretation Introduction

Interpretation:

Molecular structures of the given organophosphorus insecticides should be determined.

Concept introduction:

Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

(b)

Interpretation Introduction

Interpretation:

The suitable insecticide which can be used in our garden should be determined from the given organophosphate insecticide and the correct reason for choosing that insecticide should be given.

Concept introduction:

Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

LD₅₀ represents the individual dose required to kill 50 percent of a population of test animals and it is a n index determination of medicine and poison’s virulence.

Lower the LD₅₀ dose, the more toxic the pesticide.

(c)

Interpretation Introduction

Interpretation:

The insecticide which is most dangerous for mammals to ingest should be determined from the given organophosphate insecticides. And the correct reason for choosing that insecticide should be given.

Concept introduction:

Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

LD₅₀ represents the individual dose required to kill 50 percent of a population of test animals and it is a n index determination of medicine and poison’s virulence.

Lower the LD₅₀ dose, the more toxic the pesticide.

Answer 6

Chapter 28.6, Problem 28.12P

(a)

Interpretation Introduction

Interpretation:

Molecular structures of the given organophosphorus insecticides should be determined.

Concept introduction:

Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

Answer 7

Chapter 28.6, Problem 28.12P

(a)

Interpretation Introduction

Interpretation:

Molecular structures of the given organophosphorus insecticides should be determined.

Concept introduction:

Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

Answer 8

(b)

Interpretation Introduction

Interpretation:

The suitable insecticide which can be used in our garden should be determined from the given organophosphate insecticide and the correct reason for choosing that insecticide should be given.

Concept introduction:

Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

LD₅₀ represents the individual dose required to kill 50 percent of a population of test animals and it is a n index determination of medicine and poison’s virulence.

Lower the LD₅₀ dose, the more toxic the pesticide.

Answer 9

(b)

Interpretation Introduction

Interpretation:

The suitable insecticide which can be used in our garden should be determined from the given organophosphate insecticide and the correct reason for choosing that insecticide should be given.

Concept introduction:

Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

LD₅₀ represents the individual dose required to kill 50 percent of a population of test animals and it is a n index determination of medicine and poison’s virulence.

Lower the LD₅₀ dose, the more toxic the pesticide.

Answer 10

(c)

Interpretation Introduction

Interpretation:

The insecticide which is most dangerous for mammals to ingest should be determined from the given organophosphate insecticides. And the correct reason for choosing that insecticide should be given.

Concept introduction:

Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

LD₅₀ represents the individual dose required to kill 50 percent of a population of test animals and it is a n index determination of medicine and poison’s virulence.

Lower the LD₅₀ dose, the more toxic the pesticide.

Answer 11

(c)

Interpretation Introduction

Interpretation:

The insecticide which is most dangerous for mammals to ingest should be determined from the given organophosphate insecticides. And the correct reason for choosing that insecticide should be given.

Concept introduction:

Organophosphorus compounds are usually esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties that have important, and sometimes unique, applications for the benefit of mankind. Organophosphorus insecticides are one such a big family in organophosphorus group.

LD₅₀ represents the individual dose required to kill 50 percent of a population of test animals and it is a n index determination of medicine and poison’s virulence.

Lower the LD₅₀ dose, the more toxic the pesticide.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 28.1 - While thinking about how a messenger molecule and...Ch. 28.2 - Prob. 28.2P Ch. 28.2 - Prob. 28.3P Ch. 28.2 - Prob. 28.4P Ch. 28.3 - Prob. 28.5P Ch. 28.3 - Prob. 28.6KCP Ch. 28.4 - Prob. 28.7P Ch. 28.4 - Look at the structure of thyroxine shown earlier...Ch. 28.4 - Prob. 28.1CIAP Ch. 28.4 - Prob. 28.2CIAP

Solution Summary: The author explains that organophosphorus compounds are esters, amides or thiol derivatives of phosphonic acid and form a large family of chemical agents with biological properties.

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