Chemistry Archives - Page 27 of 30

Retell the tragic story of Libby Zion from the psychopharmacology point of view:What would be a pharmacological intervention that could have helped her and other patients with a similar condition?Explain

Posted on October 17, 2020 by Ambrose

Retell the tragic story of Libby Zion from the *psychopharmacology* point of view (10 pts). Discuss her symptoms, diagnosis (2), focus on drug mechanisms and interactions (2), argue both for and against the role of cocaine in pharmacological mechanisms, causing her death (4). What would be a pharmacological intervention that could have helped her and […]

Why are NMDA receptors sometimes called “coincidence detectors”?Explain this phenomenon at a molecular, cellular, and behavioral level.

Posted on October 17, 2020 by Ambrose

Why are NMDA receptors sometimes called “coincidence detectors”? (10pts) Explain this phenomenon at a molecular, cellular, and behavioral level (6). What is the role of magnesium in this process (2), and can magnesium supplementation improve learning? If yes, explain why and provide the evidence (cite 1-2 papers); or explain why not (2).

Assuming that each colony arose from one molecule of DNA, what percentage of the DNA molecules were successfully transformed? What might limit the number of colonies obtained from the transformation?Provide an explanation forany changes in the color of the colonies on the plates for the transformations.

Posted on October 13, 2020 by Ambrose

Lab Report III (Labs 3-5)Calculate the transformation efficiencies for both ligation reactions:Transformation efficiency = (number of colonies)/(μg DNA)To do this, the amount of DNA that resulted in the number of colonies on each plate needs to be calculated. Remember that not all of the transformation mixture was plated. If no colonies were observed on a […]

When liquid-liquid extraction is used the phase with the greater density will be the lower one in the separatory funnel:What is the density of diethyl ether (g/mL) relative to that of water?

Posted on October 13, 2020 by Ambrose

A mixture of a solid carboxylic acid and a solid neutral organic compound must be separated into its two components by liquid-liquid extraction using diethyl ether and aqueous sodium bicarbonate solution. Once separated,the two compounds must be purified and subsequently identified. Possible unknowns are listed in Tables II& III. When liquid-liquid extraction is used the […]

Imagine a world in which all the elements existed, but they could not form any chemical bonds with each other. What kinds of substances could exist in such a world? What kinds of substances could not exist? What do you think this world would be like?Discuss

Posted on October 10, 2020 by Ambrose

Imagine a world in which all the elements existed, but they couldn’t form any chemical bonds with each other. What kinds of substances could exist in such a world? What kinds of substances could not exist? What do you think this world would be like?

How do the bonded and non-bonded electron pairs on the central atom of a molecule determine the 3D shape of a molecule?Explain

Posted on October 9, 2020 by Ambrose

How do the bonded and non-bonded electron pairs on the central atom of a molecule determine the 3D shape of a molecule?

Demonstrate comprehensive understanding of thermochemical principles and the properties of particles and substances – elaborating, justifying, relating, evaluating, comparing and contrasting, or analysing links between the properties of particles, the properties of substances they form, thermochemical principles, and related calculations.

Posted on October 8, 2020 by Ambrose

Demonstrate comprehensive understanding of thermochemical principles and the properties of particles and substances – elaborating, justifying, relating, evaluating, comparing and contrasting, or analysing links between the properties of particles, the properties of substances they form, thermochemical principles, and related calculations.

The nylon polymer chain can be broken down in the presence of acid or base. Compare and contrast the reactions of this polymer with both dilute acid and base solutions:Name of the type of reaction occurring and draw structural formulae of the products formed from both acidic and basic reactions.

Posted on October 8, 2020 by Ambrose

The nylon polymer chain can be broken down in the presence of acid or base. Compare and contrast the reactions of this polymer with both dilute acid and base solutions. In your answer, you should include: Name of the type of reaction occurring and draw structural formulae of the products formed from both acidic and […]

Two of these molecules are constitutional isomers.Identify these molecules and give their molecular formula:Explain why they are constitutional isomers.

Posted on October 8, 2020 by Ambrose

The structures of 3 molecules A, B and C extracted from plants are shown below. ACHCH2OCHCH2CHCCH2CH3CH3OHC: CH3CCH2CCCHCH3CH3CH3OOH B:CH2CH2CHCH2CHCCH3CH3CH3OCOCH3 (a)Two of these molecules are constitutional isomers. Identify these molecules and give their molecular formula. (i)Molecules Molecular formula: (ii)Explain why they are constitutional isomers.

In the development of such compounds, organometallic compounds and their unique physic-chemical properties are now being translated as potential candidates for medical purposes:Write an essay about the use of organometallic chemistry in the development of anti-cancer drugs.

Posted on October 8, 2020 by Ambrose

Over the past few years, modern medical chemistry has evolved and led to the production of new chemotherapeutic compounds. In the development of such compounds, organometallic compounds and their unique physic-chemical properties are now being translated as potential candidates for medical purposes. And so, for this assignment, you are asked to write an essay about […]

Essay Quoll

Category: Chemistry

Retell the tragic story of Libby Zion from the psychopharmacology point of view:What would be a pharmacological intervention that could have helped her and other patients with a similar condition?Explain

Why are NMDA receptors sometimes called “coincidence detectors”?Explain this phenomenon at a molecular, cellular, and behavioral level.

When liquid-liquid extraction is used the phase with the greater density will be the lower one in the separatory funnel:What is the density of diethyl ether (g/mL) relative to that of water?

Imagine a world in which all the elements existed, but they could not form any chemical bonds with each other. What kinds of substances could exist in such a world? What kinds of substances could not exist? What do you think this world would be like?Discuss

How do the bonded and non-bonded electron pairs on the central atom of a molecule determine the 3D shape of a molecule?Explain

The nylon polymer chain can be broken down in the presence of acid or base. Compare and contrast the reactions of this polymer with both dilute acid and base solutions:Name of the type of reaction occurring and draw structural formulae of the products formed from both acidic and basic reactions.

Two of these molecules are constitutional isomers.Identify these molecules and give their molecular formula:Explain why they are constitutional isomers.

In the development of such compounds, organometallic compounds and their unique physic-chemical properties are now being translated as potential candidates for medical purposes:Write an essay about the use of organometallic chemistry in the development of anti-cancer drugs.