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What is the mechanism of the Pinacol-Pinacolone rearrangement and how does it differ from the Beckmann rearrangement? Provide the structures of the reactants, intermediate(s), and products involved in both reactions.
answered
Feb 22
in
Organic Chemistry
1
answer
22
views
How do the photochemical properties of supramolecular assemblies depend on the shape and size of the assemblies, as well as the composition of the molecules involved in the supramolecular assembly?
asked
Feb 22
in
PhotoChemistry
1
answer
29
views
How do the electronic and magnetic properties of metal-organic frameworks affect their performance as catalysts for specific chemical reactions?
answered
Feb 20
in
Quantum Chemistry
1
answer
38
views
How does the choice of exchange-correlation functional affect the prediction of surface properties (such as surface energy and adsorption energy) in Density Functional Theory (DFT) calculations of metal surfaces?
asked
Feb 18
in
Computational Chemistry
1
answer
30
views
How does the addition of a catalyst affect the yield and molecular weight of polystyrene synthesized from styrene monomer via free radical polymerization?
answered
Feb 17
in
Chemical synthesis
1
answer
30
views
How does temperature affect the speed and efficiency of the protein folding process in molecular dynamics simulations? Specifically, how does increasing the temperature affect the stability and structural characteristics of a protein's folded state?
answered
Feb 17
in
Computational Chemistry
1
answer
31
views
How can the synthesis of polyvinylpyrrolidone from vinylpyrrolidone monomer be optimized to achieve a high yield and a high degree of polymerization?
asked
Feb 11
in
Chemical synthesis
1
answer
44
views
How can the adhesion strength between polymer surfaces be improved through the modification of surface properties?
asked
Feb 6
in
Polymer Chemistry
1
answer
37
views
How can quantum computing help in the development of new drugs with specific properties, such as improved efficacy and reduced side effects?
asked
Feb 5
in
Quantum Chemistry
1
answer
86
views
Calculate the standard enthalpy change for the reaction between methane and oxygen to form carbon dioxide and water vapor at 298 K and 1 atm of pressure, given the following reaction equation:CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)The standard enthalpies of formation for CH4(g), CO2(g), and H2O(g) are -74.8 kJ/mol, -393.5 kJ/mol, and -241.8 kJ/mol, respectively.
asked
Feb 3
in
Chemical thermodynamics
1
answer
42
views
Calculate the standard enthalpy change for the phase transition reaction, where 1 mole of solid water (ice) is transformed into 1 mole of liquid water at a constant pressure of 1 atm and a temperature of 298 K. Given the specific heat capacity of ice is 2.108 J g^-1 K^-1 and the specific heat capacity of water is 4.184 J g^-1 K^-1. The molar enthalpy of fusion of water is 6.01 kJ/mol.
asked
Feb 3
in
Chemical thermodynamics
1
answer
114
views
Calculate the standard electrode potential for the cell reaction: Fe3+(aq) + e- → Fe2+(aq) Given E°Fe3+/Fe2+ = 0.77 V.
asked
Feb 3
in
ElectroChemistry
1
answer
61
views
How does changing the pH of a solution affect the formation of a complex ion using the example of [Cu(H2O)6]2+ forming [Cu(NH3)4(H2O)2]2+ at different pH values? Provide an explanation based on Le Chatelier's principle.
asked
Feb 3
in
Chemical equilibrium
1
answer
124
views
How do changes in lipid metabolism and transport impact the risk of cardiovascular disease?
asked
Jan 31
in
BioChemistry
1
answer
36
views
What is the effect of different amino acid substitutions at the binding site of a protein on the binding affinity and stability of the protein-ligand complex? Use molecular dynamics simulations to analyze the interaction of the protein and ligand and compare it with the wild-type protein-ligand complex.
asked
Jan 31
in
Computational Chemistry
1
answer
86
views
How can ab initio calculations of excited state dynamics be used to predict the behavior of molecules in photochemical reactions?
answered
Jan 30
in
Computational Chemistry
1
answer
120
views
How does changing the pH of the buffer solution affect the separation and detection of ionic species during capillary electrophoresis analysis of a given sample?
asked
Jan 30
in
Analytical Chemistry
1
answer
78
views
A chemical mixture containing 30% ethanol and 70% water needs to be separated using a distillation column. The feed rate is 1000 kg/hr and the desired purity for both products is 99%. The distillation column has 20 theoretical trays, and the reflux ratio is 2.5. Determine the number of trays required to achieve the desired purity for both products.
answered
Jan 22
in
Chemical engineering
1
answer
110
views
What was the aim of Zimbardo's Stanford prison experiment?
answered
Jan 20
in
Psychology
1
answer
122
views
What is the anchoring bias?
answered
Jan 20
in
Psychology
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