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What is the optimum reaction condition for the synthesis of nylon-6,6 from adipic acid and hexamethylenediamine with the highest yield and purity?
asked
Feb 22
in
Chemical synthesis
0
votes
1
answer
30
views
What is the electronegativity difference between a nitrogen atom and an oxygen atom in a molecule of nitrous oxide (N2O)?
asked
Feb 20
in
Chemical bonding
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votes
1
answer
30
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How do the photochemical properties of different types of photovoltaic materials affect the efficiency of solar cells?
asked
Feb 20
in
PhotoChemistry
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votes
1
answer
34
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What is the effect of polymer molecular weight and chemical structure on drug release profiles in polymer-based drug delivery systems?
asked
Feb 19
in
Polymer Chemistry
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votes
1
answer
35
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How does the critical temperature of superconducting materials vary with changes in their chemical composition and crystal structure?
asked
Feb 19
in
Materials Chemistry
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1
answer
21
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How does the coordination geometry of metal ions affect the electronic and magnetic properties of metal-organic frameworks, and what is the relationship between the metal ion's oxidation state and these properties?
asked
Feb 19
in
Quantum Chemistry
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votes
1
answer
55
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What are the effects of different types of doping on the electrical properties of graphene, and how can this knowledge be applied to optimize the performance of graphene-based electronic devices?
asked
Feb 12
in
Materials Chemistry
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votes
1
answer
55
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How can the synthesis of metal-organic frameworks be optimized to improve their efficiency and stability, while also reducing the cost of production?
asked
Feb 11
in
Materials Chemistry
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votes
1
answer
81
views
How can the size and shape of metal nanoparticles synthesized using chemical methods be controlled to achieve specific properties for various applications in catalysis, biomedical imaging, and energy conversion?
asked
Feb 10
in
Materials Chemistry
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votes
1
answer
105
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How does the drug aspirin prevent blood clots and what specific chemical reactions occur in the body that cause this prevention?
asked
Jan 31
in
Medicinal Chemistry
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answer
42
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A chemical engineering firm has been tasked with designing a chemical reactor for the synthesis of ammonia gas from nitrogen and hydrogen gases. The plant requires a production of at least 1000 kg/h of ammonia gas, and the reactor should operate at a pressure of 200 atm and a temperature of 400°C. The student should determine the optimal size and design of the reactor by considering the reaction kinetics, thermodynamics, and fluid dynamics principles. The student should also select appropriate catalysts and determine the flow rate of the reactants required to achieve the desired production rate.
asked
Jan 22
in
Chemical engineering
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votes
1
answer
123
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A bottle contains a mixture of nitrogen and oxygen gases. At a specific temperature and pressure, the nitrogen molecules move on an average velocity of 500 m/s and oxygen molecules move at 400 m/s. What is the partial pressure of nitrogen and oxygen in the mixture if the total pressure of the gas is 1 atm?
asked
Jan 22
in
Physical Chemistry
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votes
1
answer
37
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How can regression analysis be used in psychology research?
asked
Jan 20
in
Psychology
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1
answer
50
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Why was the experiment of Pavlov's dogs important?
asked
Jan 20
in
Psychology
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votes
1
answer
63
views
How is identity formed in adolescence?
asked
Jan 17
in
Psychology
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votes
1
answer
91
views
What is the role of genes in cognitive development?
asked
Jan 17
in
Psychology
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votes
1
answer
84
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What is the evolutionary mismatch hypothesis?
asked
Jan 16
in
Psychology
0
votes
1
answer
83
views
What is the trait theory of personality disorders?
asked
Jan 16
in
Psychology
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votes
1
answer
37
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What is the main advantage of the parallel distributed processing model?
asked
Jan 16
in
Psychology
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votes
1
answer
48
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How can the affective neuroscience approach be used to explain emotions?
asked
Jan 16
in
Psychology
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