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What is the optimal reaction conditions (temperature, pressure, concentration) for the preparation of 2,4,6-trinitrotoluene from toluene and nitric acid, and what is the yield of the reaction under these conditions?
asked
3 days
ago
in
Chemical synthesis
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votes
1
answer
34
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How does the Calvin cycle in photosynthesis fix carbon atoms into organic molecules, and what are the specific chemical reactions involved in this process?
asked
Feb 18
in
BioChemistry
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1
answer
33
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How does the excess input of nitrogen and phosphorus in aquatic ecosystems lead to eutrophication, and what are the potential impacts of eutrophication on water quality and aquatic life?
asked
Feb 13
in
Environmental Chemistry
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votes
1
answer
11
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How can we control the photochromic behavior of a material by modifying its molecular structure, and what are the key photochemical properties that need to be considered?
asked
Feb 12
in
PhotoChemistry
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1
answer
14
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How can the mechanical and thermal properties of polymer-based composites be optimized for aerospace applications?
asked
Feb 7
in
Polymer Chemistry
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1
answer
28
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How can the electronic and magnetic properties of metal-organic frameworks be accurately predicted using quantum chemical calculations?
asked
Feb 7
in
Quantum Chemistry
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1
answer
30
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How can the efficiency of polymer-based photovoltaic materials be improved by optimizing their chemical structure and composition?
asked
Feb 7
in
Polymer Chemistry
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1
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49
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How can the critical temperature (Tc) of superconducting materials be improved through the modulation of the crystal structure and composition of the material?
asked
Feb 6
in
Materials Chemistry
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1
answer
33
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How can Fourier Transform Infrared Spectroscopy (FTIR) be used to identify the chemical composition of a polymer sample?
asked
Feb 5
in
Polymer Chemistry
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1
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36
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How can current teaching methods in chemistry be modified to better support students with learning disabilities, specifically dyslexia and dysgraphia, in understanding and retaining the material?
asked
Feb 5
in
Chemical education
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55
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Here is a problem related to Hess's Law for the student to solve:Suppose you are given the following three equations, each with their respective enthalpy change: (1) 2H2(g) + O2(g) --> 2H2O(l) ΔH₁ = -572 kJ/mol (2) 2H2O(l) --> 2H2(g) + O2(g) ΔH₂ = 472 kJ/mol (3) C(s) + O2(g) --> CO2(g) ΔH₃ = -394 kJ/molUse Hess's law to calculate the enthalpy change (in kJ/mol) for the following reaction: C(s) + 2H2(g) --> CH4(g)
asked
Feb 4
in
Chemical reactions
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votes
1
answer
68
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How does the process of carbon fixation contribute to the overall process of photosynthesis, and what role does the enzyme Rubisco play in this process?
asked
Jan 31
in
BioChemistry
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1
answer
57
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How do the specific interactions between carbohydrates and proteins contribute to the recognition and binding events involved in immune responses?
asked
Jan 31
in
BioChemistry
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votes
1
answer
84
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What is the major product of the reaction between 2-methyl-2-pentanol and conc. HBr?
asked
Jan 21
in
Organic Chemistry
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votes
1
answer
55
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Why is the social identity theory important to psychology?
asked
Jan 20
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Psychology
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1
answer
40
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Where did Hans Eysenck conduct his research on personality traits?
asked
Jan 17
in
Psychology
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1
answer
10
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Where do gestalt psychologists believe perception occurs?
asked
Jan 17
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Psychology
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1
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72
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What is the name of the phenomenon in which individuals conform to the group opinion to avoid being ostracised?
asked
Jan 15
in
Psychology
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1
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45
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What is the transference-countertransference dynamic in therapy?
asked
Jan 15
in
Psychology
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1
answer
68
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What is the cognitive-behavioural approach?
asked
Jan 15
in
Psychology
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