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User LeoQuinonez1
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1
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13
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What is the role of the particle size and surface area in the catalytic activity of solid surfaces? Provide examples of industrial applications where the knowledge of surface chemistry is crucial for the development of efficient catalysts.
asked
1 day
ago
in
Surface Chemistry
0
votes
1
answer
20
views
How does the rate of a chemical reaction affect the potential for a hazardous event to occur, and what measures can be taken to mitigate the risk and ensure reaction safety?
asked
3 days
ago
in
Chemical kinetics
0
votes
1
answer
22
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How does the photophysical and photochemical behavior of lanthanide complexes change as a function of their coordination environment and the ligands coordinated to the central lanthanide ion?
asked
3 days
ago
in
PhotoChemistry
0
votes
1
answer
23
views
What is the most effective metal catalyst for the selective oxidation of hydrocarbons to aldehydes and ketones, and how does the surface structure and composition of the metal affect the selectivity and efficiency of the reaction?
asked
4 days
ago
in
Surface Chemistry
0
votes
1
answer
35
views
What is the magnetic moment of the molecule NO (Nitric oxide) in its ground state, and how does it change upon excitation to its first excited state?
asked
5 days
ago
in
Quantum Chemistry
0
votes
1
answer
18
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What is the standard enthalpy change for the fusion reaction of hydrogen atoms to form helium atoms? Give the equation for the reaction and show all calculations involved in determining the answer.
asked
5 days
ago
in
Chemical thermodynamics
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votes
1
answer
23
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How many ATP molecules can be produced by the complete oxidation of one molecule of glucose through the Citric Acid Cycle and Oxidative Phosphorylation?
asked
6 days
ago
in
BioChemistry
0
votes
1
answer
25
views
What effect does molecular weight have on the rheological properties of polymer melts?
asked
Feb 13
in
Polymer Chemistry
0
votes
1
answer
40
views
What is the role of metal ions in the catalytic activity of metalloenzymes and metalloproteins, and how does the coordination chemistry of these metal ions contribute to their function?
asked
Feb 13
in
Coordination Chemistry
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votes
1
answer
35
views
What effect will increasing the pressure have on the equilibrium position of a reaction where the number of moles of gas increases? Provide an explanation based on Le Chatelier's principle.
asked
Feb 13
in
Chemical equilibrium
0
votes
1
answer
59
views
How does the entropy of a system change during an irreversible process such as an exothermic chemical reaction? Use the concepts of non-equilibrium thermodynamics to explain your answer.
asked
Feb 13
in
Physical Chemistry
0
votes
1
answer
22
views
How does the structure of hemoglobin influence its function as an oxygen transporter in the human body?
asked
Feb 13
in
Organic Chemistry
0
votes
1
answer
9
views
What are the chemical pollutants commonly used in farming practices and how do they impact the environment in the long term? Can alternative farming techniques be used to reduce the negative impact of chemical pollutants on soil, water, and air quality?
asked
Feb 12
in
Environmental Chemistry
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votes
1
answer
26
views
How can the properties of polymer products be improved through extrusion processing?
asked
Feb 10
in
Polymer Chemistry
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votes
1
answer
34
views
How can the polymerization reaction be optimized to maximize the yield of the desired polymer while minimizing the production of undesired byproducts in the process?
asked
Feb 10
in
Chemical engineering
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votes
1
answer
29
views
How can pharmacogenetics be used to predict an individual's response to a specific drug and optimize drug therapy for that individual?
asked
Feb 5
in
Medicinal Chemistry
0
votes
1
answer
36
views
How can chemistry teachers effectively engage their students in the learning process and provide hands-on experimentation opportunities, given limited resources and funding for materials?
asked
Feb 5
in
Chemical education
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votes
1
answer
56
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Calculate the standard enthalpy change for the precipitation reaction between lead(II) nitrate and sodium chloride to form lead(II) chloride and sodium nitrate. The balanced chemical equation for the reaction is:Pb(NO3)2 (aq) + 2NaCl (aq) → PbCl2 (s) + 2NaNO3 (aq)
asked
Feb 3
in
Chemical thermodynamics
0
votes
1
answer
110
views
What are the vibrational frequencies and IR spectra of carbon dioxide (CO2) molecule calculated using quantum chemical methods?
asked
Jan 31
in
Quantum Chemistry
0
votes
1
answer
11
views
How can a chemical engineer design a system for the production of natural flavors using sustainable and eco-friendly processes?
asked
Jan 30
in
Chemical engineering
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