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How does the shape and size of gold nanoparticles affect their behavior in water? Use molecular dynamics simulations to compare the diffusion rate and energy of small, spherical gold nanoparticles versus larger, rod-shaped gold nanoparticles.
asked
1 day
ago
in
Computational Chemistry
0
votes
1
answer
19
views
What is the relationship between the crystal structure and electronic properties of perovskite materials, and how can this knowledge be used to optimize the efficiency of perovskite solar cells?
asked
1 day
ago
in
Quantum Chemistry
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votes
1
answer
15
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How does the presence of toxic heavy metal ions like lead or mercury in water affect the survival and reproduction of different species of aquatic organisms, and what are the underlying chemical mechanisms responsible for the observed effects?
asked
3 days
ago
in
Environmental Chemistry
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votes
1
answer
24
views
How does the presence of a catalyst affect the rate of a specific heterogeneous catalyzed reaction? Provide experimental evidence to support your answer.
asked
3 days
ago
in
Surface Chemistry
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votes
1
answer
19
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How does the pH of a reaction mixture affect the reaction rate of the acid-catalyzed hydrolysis of sucrose?
asked
3 days
ago
in
Chemical kinetics
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votes
1
answer
20
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What is the lattice energy of NaCl? Given: The ionic radius of Na+ is 0.98 Å, the ionic radius of Cl- is 1.81 Å, and the lattice energy of NaCl is -787.3 kJ/mol.
asked
5 days
ago
in
Inorganic Chemistry
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votes
1
answer
25
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What is the IUPAC name of a cycloalkane with 9 carbons, and how many stereoisomers does it have if it contains two methyl groups in a trans-configuration?
asked
5 days
ago
in
Organic Chemistry
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votes
1
answer
27
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How does the type and size of nanomaterials affect the enhancement factor in Surface-enhanced Raman spectroscopy (SERS)?
asked
5 days
ago
in
Surface Chemistry
0
votes
1
answer
27
views
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
6 days
ago
in
Chemical equilibrium
0
votes
1
answer
24
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What is the order of the reaction of the decomposition of hydrogen peroxide with potassium iodide and how does it affect the rate of the reaction? Provide experimental evidence to support your answer.
asked
6 days
ago
in
Chemical kinetics
0
votes
1
answer
18
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What is the mechanism of conversion of a carboxylic acid into its corresponding acid chloride using thionyl chloride and how can this reaction be utilized in the synthesis of esters?
asked
6 days
ago
in
Organic Chemistry
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votes
1
answer
25
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What is the bond order of the oxygen molecule (O2) using the molecular orbital theory, and how does it relate to the stability of the molecule?
asked
Feb 18
in
Physical Chemistry
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votes
1
answer
47
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How do surface chemistry principles affect the taste and quality of tea during its processing?
asked
Feb 14
in
Surface Chemistry
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votes
1
answer
39
views
What type of hybrid orbitals are present in the molecule CH4 (methane)?
asked
Feb 13
in
Chemical bonding
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votes
1
answer
31
views
What happens in a single replacement reaction when iron is added to a copper sulfate solution? Write the balanced chemical equation for the reaction that occurs and identify the product formed.
asked
Feb 13
in
Chemical reactions
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votes
1
answer
37
views
How can the mechanical and chemical properties of polymer-based biomaterials for tissue engineering be optimized to enhance their compatibility with biological tissues and improve their long-term performance as implantable devices?
asked
Feb 7
in
Polymer Chemistry
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votes
1
answer
32
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How can the insufficient emphasis on practical applications of chemistry in the classroom be addressed to better prepare students for real-world applications in the field of chemistry?
asked
Feb 7
in
Chemical education
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votes
1
answer
39
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How can the electronic transport properties of a molecular system be evaluated using density functional theory (DFT) calculations, and how do factors such as molecular structure and device contacts impact the resulting transport properties?
asked
Feb 7
in
Computational Chemistry
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votes
1
answer
29
views
How can chemistry students who have limited access to laboratory equipment and facilities still effectively learn and understand chemical concepts that are typically taught through hands-on experimentation?
asked
Feb 5
in
Chemical education
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votes
1
answer
74
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What is the concentration of chloride ions in a 0.10 M solution of hydrochloric acid (HCl) using potentiometry?
asked
Jan 30
in
Analytical Chemistry
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