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0
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1
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25
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How does the self-assembly of supramolecular structures contribute to the development of new materials with unique properties, and how can this be used in practical applications such as drug delivery systems or advanced electronic devices?
asked
1 day
ago
in
Physical Chemistry
0
votes
1
answer
19
views
What is the optimum reaction temperature for the synthesis of polyvinyl chloride (PVC) from vinyl chloride monomer, and how does this temperature affect the yield and properties of the final PVC product?
asked
3 days
ago
in
Chemical synthesis
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votes
1
answer
22
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What is the role of metal ions in the catalytic activity of the metalloenzyme carbonic anhydrase, and how do the coordination chemistry and geometry of the metal ion influence this activity?
asked
4 days
ago
in
Coordination Chemistry
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votes
1
answer
26
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What are the key physical and chemical properties of polymers that make them suitable for 3D printing? Which specific polymers have the best properties for 3D printing and why?
asked
4 days
ago
in
Materials Chemistry
0
votes
1
answer
19
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What is the hybridization of carbon in methane (CH4)?
asked
5 days
ago
in
Chemical bonding
0
votes
1
answer
18
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What is the mechanism of electrophilic addition reaction between sulfuric acid and propene, and what are the products formed in this reaction?
asked
5 days
ago
in
Organic Chemistry
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votes
1
answer
35
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What is the bond length between two oxygen atoms in a molecule of O2, given that the equilibrium bond distance of oxygen is 121 pm?
asked
Feb 18
in
Chemical bonding
0
votes
1
answer
32
views
What is the activation energy for the electrochemical reaction between zinc and acid solution that produces hydrogen gas?
asked
Feb 17
in
ElectroChemistry
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votes
1
answer
19
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What factors affect the stability of oil-in-water emulsions and how can they be controlled for the formulation of stable emulsions in the cosmetic or food industry?
asked
Feb 14
in
Surface Chemistry
0
votes
1
answer
7
views
What is the mechanism of action and chemical signaling pathways of the hormone insulin in the regulation of glucose metabolism in the body?
asked
Feb 13
in
BioChemistry
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votes
1
answer
31
views
What are the primary causes and mechanisms of eutrophication in aquatic ecosystems and how can it be prevented and/or mitigated through the use of chemistry-related solutions?
asked
Feb 13
in
Environmental Chemistry
0
votes
1
answer
33
views
How can the mechanical properties of polymeric materials be improved during the manufacturing process?
asked
Feb 10
in
Polymer Chemistry
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votes
1
answer
23
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How can the incorporation of different metal ions into a coordination polymer or metal-organic framework impact the porosity and adsorption properties of the material?
asked
Feb 7
in
Coordination Chemistry
0
votes
1
answer
28
views
How can chemistry teachers provide better support and accommodations for students with learning disabilities to promote their success and engagement in the subject?
asked
Feb 6
in
Chemical education
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votes
1
answer
46
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Consider the coordination chemistry of metalloproteins and metalloenzymes. How does the binding of a metal ion to a protein or enzyme affect its structure and function? Provide specific examples of metalloproteins and metalloenzymes and describe the specific roles that the bound metal ions play in their function.
asked
Feb 3
in
Coordination Chemistry
0
votes
1
answer
10
views
Calculate the standard enthalpy change (∆H°) for the neutralization reaction of 50.0 mL of 0.100 M HCl with 75.0 mL of 0.0750 M NaOH at a constant pressure of 1 atm and a temperature of 25°C.
asked
Feb 3
in
Chemical thermodynamics
0
votes
1
answer
50
views
Calculate the standard enthalpy change (∆H) for the vaporization of 25.0 g of water at its boiling point (100°C) and 1 atm pressure assuming the heat capacity of water to be constant. Given: The heat of vaporization for water is 40.7 kJ/mol and the molar mass of water is 18.015 g/mol.
asked
Feb 3
in
Chemical thermodynamics
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votes
1
answer
12
views
Calculate the rate constant at 300 K for a gas phase reaction with a rate of 0.025 M/s and an initial concentration of 0.10 M. The reaction is second order in the concentration of reactants.
asked
Feb 3
in
Physical Chemistry
0
votes
1
answer
31
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How does changing the molecular weight of polyethylene affect its mechanical properties, specifically in terms of its use as a biomaterial for joint replacements?
asked
Feb 3
in
Materials Chemistry
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votes
1
answer
57
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Calculate the bond order and bond length of the nitrogen-oxygen bond in the NO molecule using the molecular orbital theory. Show your calculation and discuss the nature of the bond formed in NO molecule.
asked
Jan 23
in
Inorganic Chemistry
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