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1
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What is the relationship between the crystal structure and electronic properties of perovskite materials, and how can this knowledge be used to optimize the efficiency of perovskite solar cells?
asked
3 days
ago
in
Quantum Chemistry
0
votes
1
answer
25
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How does the molecular structure of a particular compound affect its rate of energy transfer processes and dynamics within a given solvent?
asked
6 days
ago
in
Quantum Chemistry
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votes
1
answer
23
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What are the mechanisms behind the long-lived emission of phosphorescent materials under light excitation, and how can these materials be optimized to increase their efficiency and stability in various photochemical applications?
asked
Feb 20
in
PhotoChemistry
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votes
1
answer
26
views
How does the lipid composition of the cell membrane affect its permeability and selectivity for certain molecules?
asked
Feb 20
in
BioChemistry
0
votes
1
answer
26
views
How does the composition of landfill leachate change over time and what impact does it have on the quality of groundwater in the surrounding area?
asked
Feb 18
in
Environmental Chemistry
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votes
1
answer
36
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What is the isomerism of a molecule and how can you determine it in organic chemistry? Provide an example of two isomers and explain the key differences between them.
asked
Feb 13
in
Chemical bonding
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votes
1
answer
44
views
How does the coordination chemistry of metalloproteins and metalloenzymes impact their biological function? Provide specific examples and discuss the role of metal ions in the catalytic activity of these biomolecules.
asked
Feb 12
in
Coordination Chemistry
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votes
1
answer
38
views
How can the surface chemistry of food and beverage processing be manipulated for better product quality and longer shelf life?
asked
Feb 11
in
Surface Chemistry
0
votes
1
answer
36
views
How can the process for the production of detergents be optimized to increase yield and improve the environmental impact of the production process?
asked
Feb 10
in
Chemical engineering
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votes
1
answer
36
views
How can the coordination number of a metal ion in a coordination compound be determined using UV-Vis spectroscopy?
asked
Feb 6
in
Coordination Chemistry
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votes
1
answer
32
views
How can pH affect the stability of a colloidal solution, and what are the methods for controlling the coagulation of colloidal particles at different pH values?
asked
Feb 5
in
Surface Chemistry
0
votes
1
answer
39
views
How can chemistry students effectively learn and apply practical skills when faced with limited opportunities for hands-on experimentation due to resource constraints in their learning environment?
asked
Feb 4
in
Chemical education
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votes
1
answer
27
views
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
66
views
How can the use of renewable energy sources such as wind, solar, and hydroelectric power be optimized to minimize environmental impacts while also meeting increasing energy demands?
asked
Jan 31
in
Environmental Chemistry
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votes
1
answer
66
views
What is the concentration in molarity of a hydrochloric acid solution if it requires 25 mL of a 0.1 M sodium hydroxide solution to neutralize 20 mL of the acid solution?
asked
Jan 30
in
Analytical Chemistry
0
votes
1
answer
94
views
What functional group(s) are present in a given unknown compound using infrared spectroscopy and how can they be identified through characteristic infrared absorption peaks?
asked
Jan 30
in
Analytical Chemistry
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votes
1
answer
104
views
A chemistry student needs to calculate the heat of sublimation for iodine given that its enthalpy of fusion is 15.52 kJ/mol and its enthalpy of vaporization is 41.57 kJ/mol. The molar mass of iodine is 126.90 g/mol. What is the heat of sublimation for iodine in kJ/mol?
asked
Jan 22
in
ThermoChemistry
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votes
1
answer
67
views
What is the structural formula of the unknown organic compound based on the IR and NMR spectroscopic data?
asked
Jan 21
in
Organic Chemistry
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votes
1
answer
78
views
How many structural isomers are possible for C6H14?
asked
Jan 21
in
Organic Chemistry
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votes
1
answer
105
views
What is the systematic name of the organic compound with the molecular formula C6H12O and a ketone functional group located on the second carbon atom from the left end?
asked
Jan 21
in
Organic Chemistry
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