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How do the size and shape of quantum dots affect their photochemical properties, such as absorption and emission spectra, quantum yield, and stability?
asked
1 day
ago
in
PhotoChemistry
0
votes
1
answer
19
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How does the size and shape of gold nanoparticles affect their surface plasmon resonance (SPR) properties?
asked
1 day
ago
in
Physical Chemistry
0
votes
1
answer
8
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How does the size and shape of a quantum dot affect its electronic and optical properties?
asked
1 day
ago
in
Quantum Chemistry
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votes
1
answer
24
views
What is the reaction mechanism of the hydration reaction of propyne, and what is the product formed?
asked
5 days
ago
in
Organic Chemistry
0
votes
1
answer
20
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What is the coordination number and structure for the complex [UO2(C2O4)(H2O)2]2-? How does the size of the ligands affect the coordination number and structure of the complex for lanthanide and actinide ions?
asked
6 days
ago
in
Coordination Chemistry
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1
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19
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How does the coordination environment around the metal ion in metalloproteins affect their enzymatic activity and specificity? Provide specific examples of metalloproteins and their respective metal coordination geometries that support your findings.
asked
Feb 19
in
Coordination Chemistry
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votes
1
answer
23
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What is the effect of the addition of nanoparticles on the mechanical and thermal properties of polymer nanocomposites?
asked
Feb 17
in
Polymer Chemistry
0
votes
1
answer
27
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What is the mechanism by which sunscreen agents absorb harmful UV radiation, and how can the efficiency of sunscreen be measured and optimized through experimentation?
asked
Feb 14
in
PhotoChemistry
0
votes
1
answer
28
views
How can you optimize the production process of a specific pharmaceutical drug to minimize waste and increase efficiency while maintaining quality and safety standards?
asked
Feb 14
in
Chemical engineering
0
votes
1
answer
31
views
How can we optimize the extrusion process for a specific polymer to achieve desired properties in the final product?
asked
Feb 14
in
Polymer Chemistry
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votes
1
answer
36
views
How can we modify the chemical structure of existing antibiotics to make them more effective in combating drug-resistant bacteria?
asked
Feb 13
in
Medicinal Chemistry
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votes
1
answer
70
views
How can the synthesis of metal-organic frameworks (MOFs) be optimized to improve their stability and efficiency in gas separation applications?
asked
Feb 11
in
Materials Chemistry
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votes
1
answer
31
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How can chemistry educators increase the availability and accessibility of extracurricular activities related to chemistry for students in underprivileged schools or low-income communities?
asked
Feb 4
in
Chemical education
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votes
1
answer
9
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Design a chemical reactor for the production of 1000 kg per hour of ammonia through the Haber process, given a feedstock gas composition of nitrogen and hydrogen in a 3:1 molar ratio, and operating conditions of 450°C at 100 bar pressure. Determine the reactor size and necessary input flow rates of reactants, and identify any key design considerations that need to be taken into account.
asked
Feb 3
in
Chemical engineering
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votes
1
answer
53
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Calculate the vibrational frequencies and corresponding infrared spectra of carbon dioxide gas (CO2) using quantum chemical methods.
asked
Feb 3
in
Quantum Chemistry
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votes
1
answer
68
views
How effective are current environmental regulations in protecting air quality from industrial pollution in the United States?
asked
Jan 31
in
Environmental Chemistry
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votes
1
answer
85
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How does the drug acetaminophen reduce fever and relieve pain in the human body at the molecular level?
asked
Jan 30
in
Medicinal Chemistry
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votes
1
answer
109
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What type of polymer-based sensor is suitable for detecting heavy metal ions in aqueous solutions, and how does its sensitivity compare to existing detection methods?
asked
Jan 30
in
Polymer Chemistry
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votes
1
answer
102
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Identify the type of inorganic solid present in MgCl2, SiC, and Cu. Justify your answer by explaining the bonding present in each compound.
asked
Jan 30
in
Inorganic Chemistry
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votes
1
answer
50
views
How can UV-Vis spectroscopy be used to identify the presence of functional groups, such as carbonyl groups or double bonds, in an unknown compound, and what are the specific absorption characteristics of these functional groups in the UV-Vis spectrum?
asked
Jan 29
in
Analytical Chemistry
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