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0
votes
1
answer
26
views
How does the size and shape of graphene sheets affect their electrical conductivity and suitability for use in electronic devices?
asked
1 day
ago
in
Materials Chemistry
0
votes
1
answer
20
views
How does the presence of heavy metals in soil affect the growth and nutritional value of crops, and what methods can be used to remediate contaminated soils?
asked
3 days
ago
in
Environmental Chemistry
0
votes
1
answer
22
views
What are the photochemical properties of the most commonly used photovoltaic materials and how do these properties affect the efficiency of the solar cells they are used in?
asked
4 days
ago
in
PhotoChemistry
0
votes
1
answer
25
views
What is the effect of changing the concentration of reactants on the rate of a reaction with a multi-step mechanism, and how does this compare to the effect on the rate of a reaction with a single-step mechanism?
asked
5 days
ago
in
Chemical kinetics
0
votes
1
answer
29
views
What is the coordination number and geometry of the lanthanide complex [Eu(H2O)8]Cl3? Explain the factors that determine the coordination number and geometry for lanthanide complexes.
asked
6 days
ago
in
Coordination Chemistry
0
votes
1
answer
37
views
How does the concentration of heavy metals in soil affect the growth and quality of crops?
asked
6 days
ago
in
Environmental Chemistry
0
votes
1
answer
22
views
How does temperature affect the activity of the enzyme α-amylase in breaking down starch into maltose?
asked
Feb 17
in
BioChemistry
0
votes
1
answer
39
views
What are the photochemical properties of gold nanoparticles and how do they affect their optical and electronic properties?
asked
Feb 13
in
PhotoChemistry
0
votes
1
answer
37
views
How do different electronic transitions affect the excited state dynamics of a system, and how can we predict these dynamics using ab initio calculations in computational chemistry?
asked
Feb 12
in
Computational Chemistry
0
votes
1
answer
39
views
How can the integration of environmental chemistry into the existing curriculum of a chemistry syllabus enhance students' understanding of the impact of chemical reactions on the environment and promote responsible use of chemicals in their future careers?
asked
Feb 7
in
Chemical education
0
votes
1
answer
34
views
How can the adhesive properties of polymer-based adhesives be enhanced to improve their bonding strength and durability?
asked
Feb 6
in
Polymer Chemistry
0
votes
1
answer
55
views
Explain how the glass transition temperature of a polymer is influenced by its molecular weight and degree of branching.
asked
Feb 4
in
Physical Chemistry
0
votes
1
answer
44
views
Design a chemical reactor system to produce 100 litres of ammonia per hour from hydrogen and nitrogen gases. The reaction occurs at 450°C and 200 atm pressure. The reactor should have a conversion rate of at least 95% and a selectivity of 100% towards ammonia production. The feed gases are available at a rate of 200 litres per minute each, and the reactor should operate continuously for 30 days. Also, ensure that the reactor design considers the safety precautions required for handling flammable gases and high-pressure materials. Provide a detailed technical report of your reactor design with an analysis of the efficiency, cost, and environmental impact.
asked
Feb 3
in
Chemical engineering
0
votes
1
answer
87
views
What is the effect of different types of catalysts on the reaction rate of the decomposition of hydrogen peroxide?
asked
Jan 31
in
Chemical kinetics
0
votes
1
answer
59
views
How does the drug aspirin interact with COX enzymes at the molecular level to inhibit pain and inflammation?
asked
Jan 31
in
Medicinal Chemistry
0
votes
1
answer
71
views
What is the mechanism of the reaction between ethanol and HBr? Draw the complete mechanism, including any intermediates formed during the process. Be sure to explain the key steps involved in the reaction and the overall reaction mechanism.
asked
Jan 31
in
Organic Chemistry
0
votes
1
answer
38
views
What functional group(s) are present in a compound with the molecular formula C3H6O, as determined by infrared spectroscopy?
asked
Jan 30
in
Analytical Chemistry
0
votes
1
answer
64
views
A chemistry student wants to know how the equilibrium of a reaction will be affected by an increase in temperature. The reaction studied is N2(g) + 3H2(g) ↔ 2NH3(g) and has an equilibrium constant (Kc) of 3.5 x 10^-5 at a certain temperature. If the temperature is increased, what will happen to the concentration of NH3 at equilibrium?
asked
Jan 22
in
Chemical reactions
0
votes
1
answer
79
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
asked
Jan 22
in
Chemical engineering
0
votes
1
answer
12
views
What are the implications of Erikson's theory of psychosocial development for understanding adolescent development?
asked
Jan 17
in
Psychology
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