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0
votes
1
answer
23
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What is the mechanism of the reaction between benzene and chlorine in the presence of a catalyst, and what intermediates are formed during this process?
asked
3 days
ago
in
Organic Chemistry
0
votes
1
answer
20
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What is the effect of temperature on the rate of the inorganic reaction between hydrochloric acid and sodium thiosulfate?
asked
3 days
ago
in
Inorganic Chemistry
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votes
1
answer
22
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What is the mechanism for the photochemical reaction of benzene and chlorine, and how does the mechanism differ when compared to the photochemical reaction of benzene and bromine?
asked
3 days
ago
in
PhotoChemistry
0
votes
1
answer
16
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How does the photochemical behavior of (+)-carvone differ from that of (-)-carvone, and what is the origin of this difference in terms of their molecular structure and chirality?
asked
3 days
ago
in
PhotoChemistry
0
votes
1
answer
32
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What is the coordination structure of the metal center in the enzyme carbonic anhydrase and how does this structure facilitate the enzyme's catalytic activity in the hydration of carbon dioxide?
asked
5 days
ago
in
Coordination Chemistry
0
votes
1
answer
22
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How does the reaction rate of the decomposition of hydrogen peroxide change with changes in pressure?
asked
6 days
ago
in
Chemical kinetics
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votes
1
answer
22
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What is the coordination number of a compound with formula [Fe(H2O)6]3+ and what is the geometry of the complex?
asked
6 days
ago
in
Coordination Chemistry
0
votes
1
answer
25
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How does the adsorption of gases on solid surfaces change with temperature? Provide experimental evidence and theoretical explanation.
asked
Feb 17
in
Physical Chemistry
0
votes
1
answer
27
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How does surface modification of nanoparticles affect their stability and reactivity in aqueous solutions?
asked
Feb 17
in
Surface Chemistry
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votes
1
answer
29
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What specific photochemical mechanisms allow sunscreen agents such as Avobenzone and Octinoxate to effectively absorb harmful UV radiation, and how do these mechanisms differ between these two common sunscreen ingredients?
asked
Feb 14
in
PhotoChemistry
0
votes
1
answer
42
views
How have environmental regulations impacted the chemical industry's production processes and how effective have they been in protecting the environment?
asked
Feb 13
in
Environmental Chemistry
0
votes
1
answer
50
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How can the synthesis and characterization of new materials be optimized to improve the performance and durability of fuel cells?
asked
Feb 11
in
Materials Chemistry
0
votes
1
answer
9
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How can the synthesis and characterization of new materials be optimized to improve the efficiency and durability of fuel cells?
asked
Feb 11
in
Materials Chemistry
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votes
1
answer
25
views
How can the production process of fragrances be optimized to minimize waste and increase yield?
asked
Feb 10
in
Chemical engineering
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votes
1
answer
32
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How can the mechanical properties of 3D printed polymer parts be improved while maintaining their shape and dimensional accuracy?
asked
Feb 10
in
Materials Chemistry
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votes
1
answer
41
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How can the compatibility of polymer blends be improved to enhance their properties and performance?
asked
Feb 6
in
Polymer Chemistry
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votes
1
answer
8
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How can chemistry students overcome the challenge of limited access to laboratory equipment and facilities?
asked
Feb 5
in
Chemical education
0
votes
1
answer
35
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Calculate the standard enthalpy of formation of water (H2O) given the following information:- The standard enthalpy of formation of hydrogen gas (H2) is 0 kJ/mol- The standard enthalpy of formation of oxygen gas (O2) is 0 kJ/mol- The standard enthalpy of combustion of hydrogen gas is -286 kJ/mol- The standard enthalpy of combustion of carbon (C) is -394 kJ/mol- The standard enthalpy of combustion of methane gas (CH4) is -890 kJ/mol
asked
Feb 3
in
ThermoChemistry
0
votes
1
answer
79
views
What is the theoretical electronic band gap of a newly synthesized perovskite material with the chemical formula ABX3? Calculate the electronic band gap using a computational method such as density functional theory (DFT) and compare it with the experimental value to assess the accuracy of the computational approach.
asked
Jan 31
in
Quantum Chemistry
0
votes
1
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51
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Calculate the equilibrium concentrations of reactants and products for the following reaction at a temperature of 25°C and a pressure of 1 atm:2 NO(g) + Br2(g) ⇌ 2 NOBr(g)Given the initial concentrations are [NO] = 0.20 M, [Br2] = 0.35 M, and [NOBr] = 0.015 M. The equilibrium constant (Kc) for the reaction is 4.8 x 10^2 at 25°C.
asked
Jan 23
in
Chemical equilibrium
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