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0
votes
1
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23
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How does the size and shape of a quantum dot affect its photochemical properties, specifically the absorption and emission wavelengths?
asked
Feb 24
in
PhotoChemistry
0
votes
1
answer
34
views
What is the relationship between the electronic structure of transition metal complexes and their magnetic properties and how can this relationship be used to predict the behavior of these complexes in chemical reactions?
asked
Feb 24
in
Quantum Chemistry
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votes
1
answer
26
views
How does the intensity of light affect the rate of the reaction between potassium permanganate and oxalic acid in an acidic solution?
asked
Feb 22
in
Chemical kinetics
0
votes
1
answer
28
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What is the most efficient catalyst for the synthesis of polypropylene from propylene monomer and how does its concentration and reaction conditions affect the yield and quality of the final polypropylene product?
asked
Feb 21
in
Chemical synthesis
0
votes
1
answer
28
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What is the effect of temperature on the rate of the reaction between magnesium and hydrochloric acid?
asked
Feb 20
in
Chemical kinetics
0
votes
1
answer
25
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What is the effect of temperature on the rate of reaction in the catalytic conversion of methane into syngas using nickel as the catalyst?
asked
Feb 20
in
Physical Chemistry
0
votes
1
answer
32
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What is the bond energy required to break a single bond between two carbon atoms in a molecule of ethane (C2H6)?
asked
Feb 18
in
Chemical reactions
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votes
1
answer
12
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How does the binding of substrates to the active site of an enzyme affect the catalytic reaction rate? Use computational chemistry methods to compare the reaction rate of a free substrate versus a substrate that is bound to the enzyme's active site.
asked
Feb 17
in
Computational Chemistry
0
votes
1
answer
32
views
What is the accepted method in quantum chemistry to predict the selectivity of a chemical reaction between multiple reactants?
asked
Feb 17
in
Quantum Chemistry
0
votes
1
answer
41
views
How do protein kinases play a crucial role in cellular signal transduction pathways? Provide a detailed explanation with relevant chemical reactions and examples.
asked
Feb 14
in
BioChemistry
0
votes
1
answer
32
views
How can the use of microwave-assisted synthesis methods be optimized for the production of high-quality carbon nanotubes with controlled structural properties?
asked
Feb 14
in
Materials Chemistry
0
votes
1
answer
71
views
How can the stability of oil-in-water emulsions be improved using natural or synthetic emulsifiers?
asked
Feb 10
in
Surface Chemistry
0
votes
1
answer
56
views
How can the stability of a polymer be improved and its degradation reduced under different environmental conditions, such as exposure to heat or sunlight?
asked
Feb 10
in
Polymer Chemistry
0
votes
1
answer
68
views
Calculate the standard enthalpy change for the vaporization reaction of 25.0 g of water at its boiling point of 100°C using the following information: the molar heat of vaporization of water is 40.7 kJ/mol and the molar mass of water is 18.015 g/mol.
asked
Feb 3
in
Chemical thermodynamics
0
votes
1
answer
68
views
How does changing the size of a quantum dot affect its electronic and optical properties, and how can this information be applied to the design of novel nano-scale electronic devices?
asked
Feb 3
in
Quantum Chemistry
0
votes
1
answer
116
views
How to determine the concentration of chloride ions in a given solution using an ion-selective electrode?
asked
Jan 30
in
Analytical Chemistry
0
votes
1
answer
39
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Calculate the formal charge of the nitrogen atom in the molecule NH3. Show your work and explain the significance of the result.
asked
Jan 23
in
Chemical bonding
0
votes
1
answer
77
views
Calculate the corrosion potential of a pure copper metal electrode immersed in a 0.1 M solution of CuSO4 at 298 K, given that the standard electrode potential of Cu2+/Cu is +0.34 V and the standard potential of the hydrogen electrode is 0 V. Assume that activity coefficients for copper ions and sulfate ions are equal to 1.0 in the solution. What is the likelihood that this copper electrode will corrode in this given environment?
asked
Jan 23
in
ElectroChemistry
0
votes
1
answer
119
views
A student needs to prepare a buffer solution with a pH of 4.5 using acetic acid (pKa = 4.76) and its conjugate base sodium acetate. The student has 100 mL of 0.1 M acetic acid and has access to sodium acetate. What mass of sodium acetate (in grams) should the student add to the solution to achieve the desired pH?
asked
Jan 22
in
Chemical reactions
0
votes
1
answer
60
views
Where can research be applied in psychology?
asked
Jan 20
in
Psychology
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