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votes
1
answer
32
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How does the size and shape of a gold nanoparticle affect its stability and reactivity in a molecular dynamics simulation?
asked
Feb 24
in
Computational Chemistry
0
votes
1
answer
31
views
What is the effect of the shape and size of metal nanoparticles on their catalytic activity in the reduction of a specific organic compound?
asked
Feb 24
in
Materials Chemistry
0
votes
1
answer
27
views
How does the presence of UV radiation affect the degradation and stability of polyethylene and polystyrene, and how can this degradation be minimized for the production of long-lasting plastic products?
asked
Feb 22
in
Polymer Chemistry
0
votes
1
answer
28
views
How does the lipid composition of a cell membrane affect its fluidity and permeability to different molecules?
asked
Feb 20
in
BioChemistry
0
votes
1
answer
35
views
What is the effect of temperature on the surface tension of water, and how can it be measured accurately?
asked
Feb 20
in
Surface Chemistry
0
votes
1
answer
37
views
What is the effect of solvent polarity on the rate of reaction between sodium hydroxide and acetic acid?
asked
Feb 19
in
Chemical kinetics
0
votes
1
answer
30
views
How does the chemical structure of a polymer affect its mechanical properties when used in 3D printing, and what are the most suitable polymers for producing robust and functional 3D printed objects?
asked
Feb 18
in
Materials Chemistry
0
votes
1
answer
39
views
How can we use structure-based drug design to develop a new antibiotic that specifically targets the cell wall of Gram-negative bacteria, without affecting the healthy cells of the host organism?
asked
Feb 14
in
Medicinal Chemistry
0
votes
1
answer
63
views
How many geometric isomers can be formed for the square planar complex (PtCl₂(NH₃)₂)?
asked
Feb 13
in
Coordination Chemistry
0
votes
1
answer
82
views
How can the synthesis of carbon nanotubes be improved to increase their yield and purity using a new method that is cost-effective and environmentally friendly?
asked
Feb 11
in
Materials Chemistry
0
votes
1
answer
41
views
How can the manufacturing process parameters, such as temperature and pressure, impact the properties of the final product in polymer processing?
asked
Feb 7
in
Polymer Chemistry
0
votes
1
answer
40
views
How can chemistry students organize fundraisers and outreach programs to increase awareness and generate sufficient funding for chemistry education in their local schools and communities?
asked
Feb 5
in
Chemical education
0
votes
1
answer
88
views
How does changing the concentration of a reactant affect the rate and profitability of a chemical reaction?
asked
Jan 31
in
Chemical kinetics
0
votes
1
answer
92
views
What is the concentration of chloride ions in a sample of seawater? Use potentiometry to quantify the amount of chloride ions present in the sample.
asked
Jan 30
in
Analytical Chemistry
0
votes
1
answer
77
views
How can we determine the concentration of fluoride ions in a given solution using an ion-selective electrode?
asked
Jan 29
in
Analytical Chemistry
0
votes
1
answer
60
views
Calculate the exchange current density for the redox reaction: Fe2+ + Cr2O72- + 14H+ → 2Fe3+ + 2Cr3+ + 7H2O Given that the standard potential for the reaction at 25°C is 1.33 V, the gas constant is 8.314 J/mol K, and the temperature is 298 K.
asked
Jan 23
in
ElectroChemistry
0
votes
1
answer
98
views
A chemical engineering company has a mixture of ethanol and water with a concentration of 30% ethanol to separate using a distillation column. The company needs to obtain a concentration of 80% ethanol in the distillate at a reflux ratio of 3. Calculate the number of theoretical plates required in the column for the separation, assuming no vapor or liquid bypass, and that the minimum vapor velocity is maintained.
asked
Jan 22
in
Chemical engineering
0
votes
1
answer
104
views
A battery consists of a Zinc electrode and a Copper electrode. Calculate the exchange current density at the Zinc electrode if the concentration of Zinc ion in its solution is 0.1 M and the potential difference between the electrodes is 1.5 V. The standard electrode potential for Zinc is -0.76 V and the transfer coefficient for the electrode reaction is 0.5.
asked
Jan 22
in
ElectroChemistry
0
votes
1
answer
88
views
Why is the peer support approach effective?
asked
Jan 20
in
Psychology
0
votes
1
answer
44
views
How does methylphenidate affect the brain?
asked
Jan 20
in
Psychology
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