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What is the optimal concentration and reaction time for the synthesis of benzocaine from p-aminobenzoic acid and ethanol while minimizing the formation of impurities?

asked Feb 28 in Chemical synthesis by TheScientist (138k points)

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What is the corrosion current density of iron in a 0.1 M sulfuric acid solution at 25°C, given that the half-cell potential for the iron electrode is -0.44 V and the Tafel slope is 120 mV/decade?

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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What is the standard enthalpy change for the transition of water from ice at -10°C to liquid water at 25°C? Provide the balanced chemical equation for this phase transition and use the appropriate values to calculate the standard enthalpy change.

asked Mar 1 in Chemical thermodynamics by TheScientist (138k points)

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How does the urea cycle in the liver contribute to the assimilation of nitrogen in the human body?

asked Feb 28 in BioChemistry by TheScientist (138k points)

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How does the surface tension of water change with changes in temperature, and can this be accurately measured using the capillary rise method?

asked Feb 27 in Surface Chemistry by TheScientist (138k points)

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What are the factors that determine the type of inorganic solid (ionic, covalent, metallic)? And based on those factors, determine the type of solid for a given compound such as NaCl, H2O, and Fe.

asked Feb 28 in Inorganic Chemistry by TheScientist (138k points)

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What is the step-by-step mechanism involved in the synthesis of polyvinyl chloride from vinyl chloride monomer? How can we control the degree of polymerization, and what are the factors that can affect the yield and quality of the final product?

asked Feb 28 in Chemical synthesis by TheScientist (138k points)

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How does the toxicity of an existing drug affect its efficacy in treating the targeted disease or condition?

asked Feb 28 in Medicinal Chemistry by TheScientist (138k points)

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What is the surface tension of water at different temperatures and how does it change with the addition of different solutes such as salt or soap?

asked Feb 27 in Surface Chemistry by TheScientist (138k points)

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How does the structure of a fluorescent dye affect its photochemical properties, such as absorption and emission wavelengths, quantum yield, and photostability?

asked Feb 26 in PhotoChemistry by TheScientist (138k points)

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How does the surface chemistry of corrosion and passivation differ for iron in a neutral pH environment versus an acidic pH environment?

asked Feb 26 in Surface Chemistry by TheScientist (138k points)

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How does the surface tension of a biomembrane affect its permeability to certain molecules?

asked Feb 26 in Surface Chemistry by TheScientist (138k points)

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How does the structure of the nucleic acids affect its function in storing and transmitting genetic information? Explain the role of base pairing, sugar-phosphate backbone and hydrogen bonding in the double helix structure of DNA.

asked Feb 26 in BioChemistry by TheScientist (138k points)

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How does the structure of DNA allow for accurate replication and repair of genetic material?

asked Feb 26 in BioChemistry by TheScientist (138k points)

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How does the substitution of ligands affect the coordination geometry and electronic properties of a coordination complex? Provide evidence from experimental data using the example of the reaction between [Fe(H2O)6]2+ and SCN- to form [Fe(SCN)(H2O)5]+.

asked Feb 26 in Coordination Chemistry by TheScientist (138k points)

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How does the structure of a transition metal complex affect its electronic and magnetic properties, and how can these properties be predicted using quantum chemistry calculations?

asked Feb 26 in Quantum Chemistry by TheScientist (138k points)

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1 answer 95 views

How does the structure of amino acids affect the properties and roles of proteins in living organisms?

asked Feb 26 in Organic Chemistry by TheScientist (138k points)

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What impact has the study of the history and evolution of chemistry had on our understanding of modern chemical theories and practices?

asked Feb 26 in Chemical education by TheScientist (138k points)

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1 answer 89 views

What are the effects of temperature and pH on the surface properties of biomembranes? Design an experiment to investigate the changes in the surface tension of biomembranes at different temperatures and pH values.

asked Feb 26 in Surface Chemistry by TheScientist (138k points)

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1 answer 92 views

How has the study of the history and evolution of chemistry impacted the development of modern chemical theories and applications?

asked Feb 26 in Chemical education by TheScientist (138k points)

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