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0
votes
26
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What is the mechanism of the photocatalytic degradation of organic pollutants using TiO2 nanoparticles under UV irradiation?
answered
Feb 22
in
Physical Chemistry
0
votes
34
views
What is the mechanism of action for the photochemical properties of the active ingredients in a selected sunscreen agent, and how do different factors, such as wavelength of light and concentration of the active ingredient, affect its efficacy?
answered
Feb 20
in
PhotoChemistry
0
votes
35
views
What are the factors that affect the boiling point of a substance and how can we predict the boiling point of a substance based on its intermolecular forces? Provide examples to support your answer.
answered
Feb 17
in
Chemical bonding
0
votes
31
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How does the addition of functional groups such as oxygen, nitrogen or sulfur affect the electronic properties of graphene and its potential use in electronic devices?
answered
Feb 17
in
Materials Chemistry
0
votes
38
views
How does nitrogen fixation occur in bacteria and plants, and what are the biochemical pathways involved in the assimilation of nitrogen into amino acids in organisms?
answered
Feb 14
in
BioChemistry
0
votes
42
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What are the factors that influence the synthesis and properties of metal-organic frameworks, and how can these frameworks be tuned for specific applications in gas storage and separation?
answered
Feb 13
in
Coordination Chemistry
0
votes
67
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What is the effect of increasing the concentration of the product on the reaction rate?
answered
Feb 13
in
Chemical kinetics
0
votes
56
views
How does histone acetylation promote transcriptional activation of a gene in DNA-protein interactions and regulation? Provide a detailed explanation including the chemical mechanisms involved in the process.
answered
Feb 13
in
BioChemistry
0
votes
161
views
How can the process design and optimization be used to improve the efficiency and sustainability of the production of polymers in chemical engineering?
answered
Feb 10
in
Chemical engineering
0
votes
34
views
How can the photochemical properties of fluorescent dyes be effectively used to create more efficient sensors for detecting biological molecules?
answered
Feb 10
in
PhotoChemistry
0
votes
36
views
How can the integration of technology in chemistry education be improved to enhance student understanding and performance in the subject? Specifically, what strategies can be implemented to overcome the barriers that prevent successful integration and adoption of technology in the chemistry classroom?
answered
Feb 7
in
Chemical education
0
votes
41
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How can industries dispose of their waste products in an environmentally friendly manner, while still ensuring that these products are not harmful to the environment?
answered
Feb 5
in
Environmental Chemistry
0
votes
35
views
How can Fourier-transform infrared spectroscopy (FTIR) be used to characterize the chemical structure of polymers? Provide an example of a specific polymer and discuss the relevant spectral features that would be observed in an FTIR spectrum.
answered
Feb 5
in
Polymer Chemistry
0
votes
36
views
How can any newly developed treatment for gastrointestinal diseases target the specific site of inflammation in the gastrointestinal tract while avoiding adverse effects in other organs?
answered
Feb 4
in
Medicinal Chemistry
0
votes
47
views
How does changing the pH of a solution affect the equilibrium position of an acid-base reaction, and what factors influence this effect? Provide examples of acid-base equilibria and their changes in equilibrium position with changes in pH.
answered
Feb 3
in
Chemical equilibrium
0
votes
64
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Calculate the equilibrium constant (Kc) at 298 K for the reaction: 2 NH3(g) ⇌ N2(g) + 3 H2(g) given that the equilibrium concentration of NH3 is 0.20 M, N2 is 0.025 M, and H2 is 0.060 M.
answered
Jan 23
in
Chemical thermodynamics
0
votes
64
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Calculate the change in entropy (ΔS) of the following reaction at 298 K:2SO2(g) + O2(g) → 2SO3(g) Given the standard molar entropies at 298 K: ΔS°(SO2,g) = 248.2 J/Kmol ΔS°(O2,g) = 205.0 J/Kmol ΔS°(SO3,g) = 256.2 J/Kmol
answered
Jan 23
in
Chemical thermodynamics
0
votes
67
views
Calculate the amount of heat required to melt 25 grams of ice at 0°C. The enthalpy of fusion of ice is 6.01 kJ/mol.
answered
Jan 23
in
ThermoChemistry
0
votes
88
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A chemistry student is asked to determine the effect of temperature and pressure on the equilibrium of the reaction: 2NO2(g) ⇋ N2O4(g) using Le Chatelier’s principle. The initial concentration of NO2(g) is 0.5 mol/L and the reaction is carried out at 25°C. How will the equilibrium shift if the temperature is increased to 100°C and the pressure is decreased to 0.5 atm?
answered
Jan 22
in
Chemical reactions
0
votes
112
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What is the balanced chemical equation for the reaction between copper (II) sulfate and sodium hydroxide?
answered
Jan 21
in
Inorganic Chemistry
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