(a) Interpretation: The cis/trans ratio refers to in permethrin is to be predicted. Concept Introduction: Permethrin is a synthetic insecticide containing ester group. They are used in commercial clothing and agricultural products. In cis-isomer, the atom or groups linked to the ring are on the same side of the ring or double bond. In trans-isomer, the atom or groups linked to a ring are on the opposite sides of the ring or double bond.

Question

A medical examiner is trying to determine the cause of death of a 48 year old male, Archie, who seems to have been poisoned. Police found rat poison (Strychnine - C21H22N2O2) in the home, so one suspect is his wife Lisa. However, upon questioning Lisa, she blames their neighbor Ralph, an anthropologist who studies antique South American hunting arrows. These arrows happen to contain the deadly poison, Curare (C40H44N4O), so Ralph is also being considered a suspect. An analysis of Archie's blood was done using mass spectrometry and a compound that contains 80.66% carbon, 7.39% hydrogen, 9.39% nitrogen, and 2.68% oxygen was found. Can you determine the empirical formula for the compund to determine if it could match one of these two poisons?

Answer 1

Question

Chapter 19, Problem 19.24P

Interpretation Introduction

(a)

Interpretation:

The cis/trans ratio refers to in permethrin is to be predicted.

Concept Introduction:

Permethrin is a synthetic insecticide containing ester group. They are used in commercial clothing and agricultural products. In cis-isomer, the atom or groups linked to the ring are on the same side of the ring or double bond. In trans-isomer, the atom or groups linked to a ring are on the opposite sides of the ring or double bond.

Interpretation Introduction

(b)

Interpretation:

The (+/−) designation in cis / trans ratio refers to in permethrin is to be predicted.

Concept Introduction:

Permethrin is a synthetic insecticide containing ester group. They are used in commercial clothing and agricultural products. Racemic mixture is a mixture of enantiomers in equal amounts. It is optically inactive.

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A medical examiner is trying to determine the cause of death of a 48 year old male, Archie, who seems to have been poisoned. Police found rat poison (Strychnine - C21H22N2O2) in the home, so one suspect is his wife Lisa. However, upon questioning Lisa, she blames their neighbor Ralph, an anthropologist who studies antique South American hunting arrows. These arrows happen to contain the deadly poison, Curare (C40H44N4O), so Ralph is also being considered a suspect. An analysis of Archie's blood was done using mass spectrometry and a compound that contains 80.66% carbon, 7.39% hydrogen, 9.39% nitrogen, and 2.68% oxygen was found. Can you determine the empirical formula for the compund to determine if it could match one of these two poisons?

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