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1
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What is the optimum concentration of nitric acid required for preparing 2,4-dinitrobenzoic acid from benzoic acid? How does this concentration affect the overall yield of the synthesis reaction?
asked
3 days
ago
in
Chemical synthesis
0
votes
1
answer
28
views
What is the oxidation state of chromium in Cr2O3 and how does this relate to its role as an oxidizing agent in redox reactions?
asked
3 days
ago
in
Chemical reactions
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votes
1
answer
15
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What is the optimum reaction time and temperature for the synthesis of polyethylene terephthalate from terephthalic acid and ethylene glycol, and how do these parameters affect the yield and molecular weight of the resulting polymer?
asked
3 days
ago
in
Chemical synthesis
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votes
1
answer
19
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How does the nature of the catalyst surface influence the mechanism and efficiency of heterogeneous catalysis in the conversion of reactants to products?
asked
4 days
ago
in
Surface Chemistry
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1
answer
21
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What is the most effective metal catalyst and reaction conditions for selective oxidation of methane to methanol on metal surfaces?
asked
4 days
ago
in
Surface Chemistry
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votes
1
answer
24
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What is the effect of varying the printing temperature on the mechanical properties of a 3D printed polymer, and how can these properties be optimized for a specific application such as prosthetic devices or industrial tooling?
asked
5 days
ago
in
Materials Chemistry
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votes
1
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34
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How does the enzyme Rubisco facilitate the fixation of CO2 during photosynthesis, and what factors affect its efficiency in this process?
asked
Feb 14
in
BioChemistry
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votes
1
answer
21
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How does quantum coherence and entanglement impact the optical and electronic properties of nanoscale systems like graphene and carbon nanotubes?
asked
Feb 14
in
Quantum Chemistry
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1
answer
37
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What is the role of metal ions in the catalytic activity of metalloenzymes? Provide examples of metalloenzymes, their metal ion cofactors, and the mechanisms by which the metal ion enhances catalysis.
asked
Feb 13
in
Coordination Chemistry
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1
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38
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Identify the type of intermolecular forces present in water and ammonia, and explain how these forces contribute to their physical properties.
asked
Feb 13
in
Chemical bonding
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1
answer
53
views
Calculate the enthalpy change for the adsorption of 2.50 moles of methane gas on a zeolite catalyst supported by alumina, given that the temperature of the system decreases from 298 K to 288 K and the pressure is decreased from 100 atm to 75 atm. The initial and final volumes of the gas are 10.0 L and 8.00 L respectively, and the heat capacity of the system is 25 J/K.
asked
Jan 23
in
ThermoChemistry
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votes
1
answer
28
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How does the information processing theory explain cognitive processes?
asked
Jan 20
in
Psychology
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votes
1
answer
43
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What is the difference between a bidirectional and unidirectional influence on development in ecological systems theory?
asked
Jan 17
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Psychology
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1
answer
53
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What is the purpose of a structural equation model?
asked
Jan 17
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Psychology
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votes
1
answer
61
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What is the difference between discourse analysis and discursive psychology?
asked
Jan 16
in
Psychology
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votes
1
answer
9
views
Compare the effectiveness of exposure therapy and cognitive-behavioural therapy in treating anxiety disorders.
asked
Jan 16
in
Psychology
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votes
1
answer
71
views
What is confirmation bias, and how does it relate to pop-psychology?
asked
Jan 15
in
Psychology
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votes
1
answer
44
views
How does evolutionary psychology explain the development of personality traits?
asked
Jan 15
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Psychology
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1
answer
44
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Who proposed the top-down theory of perception?
asked
Jan 15
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Psychology
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votes
1
answer
13
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What factors should researchers consider when studying indigenous phenomena?
asked
Jan 14
in
Psychology
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