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0
votes
16
views
How does the size and shape of metallic nanoparticles affect their catalytic activity in a reaction?
answered
1 day
ago
in
Materials Chemistry
0
votes
23
views
What is the effect of varying reactant concentrations on the rate and yield of a chemical reaction between potassium iodide and lead nitrate?
answered
3 days
ago
in
Chemical kinetics
0
votes
15
views
How does the polarity of the solvent affect the rate of the photochemical reaction of a given compound when exposed to light?
answered
3 days
ago
in
PhotoChemistry
0
votes
21
views
How do the photochemical properties of the fluorescent dye, Rhodamine B, change when exposed to different wavelengths of light and how can this be applied in the development of fluorescent imaging techniques?
answered
3 days
ago
in
PhotoChemistry
0
votes
23
views
How does the pH level of water affect the survival and growth of aquatic plants and animals in a polluted water system?
answered
3 days
ago
in
Environmental Chemistry
0
votes
28
views
What is the optimal pH range for the treatment of acid mine drainage in order to prevent the release of toxic heavy metals into the environment?
answered
4 days
ago
in
Environmental Chemistry
0
votes
30
views
What is the effect of molecular chirality on the absorption and emission of light by chiral molecules?
answered
Feb 13
in
PhotoChemistry
0
votes
32
views
How do intermolecular interactions and solvation effects influence the solubility of ionic compounds in polar solvents?
answered
Feb 13
in
Quantum Chemistry
0
votes
37
views
How can we design drugs that target specific genetic mutations responsible for causing inherited diseases, such as cystic fibrosis or sickle cell anemia, while avoiding off-target effects on healthy cells?
answered
Feb 12
in
Medicinal Chemistry
0
votes
42
views
How can the process for producing detergents be optimized to reduce environmental impact without compromising the quality and effectiveness of the final product?
answered
Feb 10
in
Chemical engineering
0
votes
9
views
How can the optical properties of glasses be optimized for specific applications, such as lenses for eyeglasses or camera lenses, and what parameters need to be considered in the design process?
answered
Feb 10
in
Materials Chemistry
0
votes
10
views
How can the mechanical properties, degradation rate, and cell response of a polymer-based biomaterial be tailored for optimal tissue engineering applications, taking into consideration the chemical and physical properties of the polymer and the target tissue?
answered
Feb 10
in
Polymer Chemistry
0
votes
29
views
How can the efficiency of the system for the production of hydrogen fuel be improved to reduce the overall cost of hydrogen fuel production?
answered
Feb 7
in
Chemical engineering
0
votes
26
views
How can the mechanical and thermal properties of polymer-based composites be optimized for use in aerospace applications?
answered
Feb 7
in
Polymer Chemistry
0
votes
11
views
Explain the role of ion channels in signal transduction pathways and provide an example of a specific ion channel and its function in cellular signaling.
answered
Feb 4
in
BioChemistry
0
votes
46
views
Determine the standard enthalpy of formation for ammonium chloride (NH4Cl) using Hess's Law and the following given reactions: 1) N2(g) + 3H2(g) → 2NH3(g) ΔH° = -46.0 kJ/mol 2) NH3(g) + HCl(g) → NH4Cl(s) ΔH° = -176.2 kJ/mol 3) N2(g) + 2H2(g) + 2Cl2(g) → 2NH4Cl(s) ΔH° = -634.2 kJ/mol
answered
Feb 4
in
ThermoChemistry
0
votes
68
views
What is the expected boiling point of a substance with a strong network of covalent bonds in its structure compared to a substance with weak London dispersion forces?
answered
Jan 30
in
Chemical bonding
0
votes
67
views
Calculate the HOMO-LUMO gap of a conjugated polymer consisting of 50 monomers, assuming that the polymer is periodic in the z-direction, using a density functional theory (DFT) program of your choice. Also, determine the absorption spectrum of the polymer in the UV-vis region, and predict its color in solution.
answered
Jan 23
in
Quantum Chemistry
0
votes
55
views
Calculate the change in enthalpy for the reaction CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (l) given that the enthalpies of formation for CH4 (g), CO2 (g) and H2O (l) are -74.81 kJ/mol, -393.51 kJ/mol and -285.83 kJ/mol respectively.
answered
Jan 23
in
Physical Chemistry
0
votes
83
views
A chemistry student wants to analyze a sample of wastewater from a local factory. They want to know the concentration of the pollutants from the wastewater before releasing it into the environment. The sample is collected in a 500 mL container. After performing the required tests, the student determines that the total dissolved solids (TDS) in the sample are 750 mg/L, and the concentration of NaCl in the sample is 150 mg/L. Calculate the mass of TDS and NaCl in the sample.
answered
Jan 22
in
Analytical Chemistry
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