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0
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22
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How does the presence of a small amount of impurities affect the liquid crystalline phase behavior and optical properties of a given substance?
answered
3 days
ago
in
Physical Chemistry
0
votes
19
views
What is the optimal simulation time for a Monte Carlo simulation of a liquid crystal system using a specific force field? How does the choice of force field affect the optimal simulation time?
answered
4 days
ago
in
Computational Chemistry
0
votes
24
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What is the optimal ratio of diisocyanate to polyol required for the synthesis of polyurethane with maximum tensile strength and elongation at break?
answered
4 days
ago
in
Chemical synthesis
0
votes
20
views
What are the most effective and environmentally safe methods for the disposal of radioactive waste in order to minimize long-term impact on the environment and human health?
answered
4 days
ago
in
Environmental Chemistry
0
votes
21
views
What is the effect of processing conditions on the mechanical properties of polymer products?
answered
5 days
ago
in
Polymer Chemistry
0
votes
21
views
How does the body synthesize non-essential amino acids, and what are the key enzymes involved in this process?
answered
5 days
ago
in
BioChemistry
0
votes
23
views
What is the effect of different solvents on the fluorescence intensity of Rhodamine B?
answered
6 days
ago
in
PhotoChemistry
0
votes
21
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How does the doping concentration of boron and phosphorus affect the electronic properties of a silicon semiconductor, and how can this knowledge be applied in the design and optimization of electronic devices?
answered
6 days
ago
in
Materials Chemistry
0
votes
22
views
How does the concentration of heavy metals in water affect the growth rate of fish?
answered
Feb 19
in
Environmental Chemistry
0
votes
26
views
How does the addition of different dopants affect the thermal conductivity and expansion coefficient of alumina ceramics, commonly used in high-temperature applications?
answered
Feb 17
in
Materials Chemistry
0
votes
26
views
What are the different types of liquid crystals and how do their properties differ? How do the properties of liquid crystals make them useful in electronic displays and other technological applications?
answered
Feb 13
in
Physical Chemistry
0
votes
10
views
How to design a system for the production of natural strawberry flavor using chemical engineering principles and techniques considering the sustainability aspect of the process?
answered
Feb 12
in
Chemical engineering
0
votes
34
views
How can chemistry students in underprivileged countries access quality textbooks and resources to study effectively and achieve academic success despite the limited availability of these materials?
answered
Feb 5
in
Chemical education
0
votes
55
views
What are the common functional groups present in alcohols and how do they affect the chemical properties of alcohols? Provide examples of reactions that alcohols undergo due to the presence of functional groups.
answered
Jan 31
in
Organic Chemistry
0
votes
35
views
What is the concentration of chloride ions in a 0.1 M solution of sodium chloride using a chloride ion-selective electrode?
answered
Jan 30
in
Analytical Chemistry
0
votes
54
views
Calculate the enthalpy change of isomerization for the conversion of cis-but-2-ene to trans-but-2-ene if the enthalpy of formation of cis-but-2-ene is -24.7 kJ/mol and the enthalpy of formation of trans-but-2-ene is -28.6 kJ/mol. The heat of combustion of but-2-ene is -2723 kJ/mol.
answered
Jan 23
in
ThermoChemistry
0
votes
61
views
A chemistry student wants to investigate the adsorption behavior of a gas on a solid surface. Using the Langmuir adsorption isotherm, determine the maximum adsorption capacity of the surface and the equilibrium constant, if the surface area of the solid is 10 cm$^2$ and the gas pressure is varied from 0.1 to 1 bar at a constant temperature of 298 K.
answered
Jan 22
in
Surface Chemistry
0
votes
80
views
A chemical plant needs to separate a mixture of benzene and toluene using a distillation column. The feed contains 40% benzene and 60% toluene. Design a distillation column to achieve a distillate with at least 90% purity of benzene. Provide the reflux ratio and the number of theoretical trays required to meet the purity specification. Assume an operating pressure of 1 atm and th
answered
Jan 22
in
Chemical engineering
0
votes
47
views
According to the working memory model, what is the relationship between attention and working memory?
answered
Jan 20
in
Psychology
0
votes
46
views
Where was the Rosenthal-Jacobson Pygmalion Effect study conducted?
answered
Jan 20
in
Psychology
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