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What are the optimal reaction conditions for the production of methanol from syngas using a ZSM-5 zeolite catalyst, and how do these conditions affect the selectivity and yield of methanol?
asked
Feb 22
in
Computational Chemistry
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votes
1
answer
32
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What are the optimal reaction conditions (temperature, pressure, and concentration) required for the preparation of 2,4-dichloronitrobenzene from nitrobenzene and chlorine gas, and how do these conditions affect the yield of the reaction?
asked
Feb 22
in
Chemical synthesis
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26
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What is the optimal reaction conditions, including the amounts of salicylic acid and acetic anhydride, reaction temperature, and reaction time, to produce the highest yield of aspirin in the synthesis of aspirin from salicylic acid and acetic anhydride?
asked
Feb 21
in
Chemical synthesis
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37
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What is the optimal molar ratio of adipic acid to hexamethylenediamine for the synthesis of nylon-6,6 with the highest yield and purity?
asked
Feb 21
in
Chemical synthesis
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1
answer
39
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How does the equilibrium position of a reaction (such as the dissociation of acetic acid) change with varying pH? Provide an explanation for the observed shift in equilibrium position with respect to Le Chatelier's principle.
asked
Feb 19
in
Chemical equilibrium
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41
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How does temperature affect the reaction rate and mechanism of a chemical reaction, as predicted by quantum mechanical calculations?
asked
Feb 17
in
Quantum Chemistry
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38
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How does the enzyme nitrogenase reduce atmospheric nitrogen to ammonia during nitrogen fixation, and what are the factors that influence its activity?
asked
Feb 14
in
BioChemistry
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1
answer
71
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What is the oxidation state of oxygen in CaO (Calcium oxide)?
asked
Feb 13
in
Chemical reactions
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1
answer
41
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How can chemistry students effectively learn and understand laboratory procedures and concepts, despite limited access to laboratory equipment and facilities?
asked
Feb 4
in
Chemical education
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85
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Calculate the standard free energy change (ΔG°) for the following redox reaction at 298K:Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s) (Given: E°cell = 1.10V, F = 96,500 J/V.mol)
asked
Feb 3
in
Chemical thermodynamics
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1
answer
101
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How do changes in the DNA sequence affect the binding affinity and specificity of a transcription factor?
asked
Jan 31
in
BioChemistry
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1
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63
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A zinc electrode is immersed in a 1.0 M ZnSO4 solution and connected to a platinum electrode that is immersed in a 1.0 M CuSO4 solution. If the measured potential difference of the cell is 1.10 V at 25 °C, what is the polarization of the cell?
asked
Jan 22
in
ElectroChemistry
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79
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A chemistry student has two containers, one with 25 grams of hydrogen gas and the other with 35 grams of oxygen gas. What mass of water can be produced when these two gases undergo a reaction and which gas is the limiting reactant?
asked
Jan 22
in
Chemical reactions
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1
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77
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How does the social-cognitive model explain the role of social information processing deficits in conduct disorder?
asked
Jan 20
in
Psychology
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1
answer
97
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According to cognitive-behavioral theory, why do individuals develop anxiety disorder?
asked
Jan 17
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Psychology
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1
answer
67
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What is the 'illusory superiority bias'?
asked
Jan 14
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Psychology
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1
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69
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What is psychosocial development?
asked
Jan 14
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Psychology
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1
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99
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What is Fritz Perls' Gestalt therapy?
asked
Jan 13
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Psychology
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53
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Which theory describes the benzene molecule and other planar aromatic hydrocarbon molecules as hexagonal rings of sp2-hybridized carbon atoms with the unhybridized p orbital of each carbon atom perpendicular to the plane of the ring?
asked
Jan 8
in
Science
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35
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What type of experiment involves two identical experiments carried out side-by-side, with and without an independent variable?
asked
Jan 8
in
Science
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