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How does the size and shape of a nanomaterial affect its electronic and optical properties, and how can these properties be calculated using quantum chemistry methods?
asked
1 day
ago
in
Quantum Chemistry
0
votes
1
answer
20
views
What is the balanced chemical equation for the reaction of aniline and chlorine gas to prepare 2-chloro-4-nitroaniline, and what is the percent yield of the reaction if 10 grams of aniline is used and 7 grams of the product is obtained?
asked
3 days
ago
in
Chemical synthesis
0
votes
1
answer
19
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What are the possible resonance structures of the nitrate ion (NO3-)? Show the correct arrangement of electrons and the placement of double bonds in each resonance structure.
asked
3 days
ago
in
Chemical bonding
0
votes
1
answer
18
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How does the length of a conjugated polymer chain affect its electronic and optical properties, and how can this be optimized for improved device performance in organic electronics?
asked
5 days
ago
in
Quantum Chemistry
0
votes
1
answer
30
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What is the enthalpy change of adsorption when 10 grams of activated charcoal absorb 1 mole of methane gas at a temperature of 298 K? Given that the van't Hoff factor for the adsorption of methane on activated charcoal is 10.5 kJ/mol.
asked
5 days
ago
in
ThermoChemistry
0
votes
1
answer
18
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What is the effect of changing the concentration of reactants on the reaction rate in the reaction between sodium thiosulphate and hydrochloric acid?
asked
6 days
ago
in
Chemical kinetics
0
votes
1
answer
22
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What is the balanced chemical equation for the synthesis of water (H2O) from its elements hydrogen (H2) and oxygen (O2)?
asked
Feb 17
in
Chemical reactions
0
votes
1
answer
31
views
How do the specific binding interactions between carbohydrates and proteins differ from non-specific interactions? Provide specific examples of each and explain the implications of these differences in biological systems.
asked
Feb 14
in
BioChemistry
0
votes
1
answer
31
views
How does plasma treatment affect the surface properties and wettability of biomaterials used in medical implant devices?
asked
Feb 14
in
Surface Chemistry
0
votes
1
answer
8
views
How can we utilize nanotechnology to optimize drug delivery systems for improved efficacy in the treatment of cancer?
asked
Feb 13
in
Medicinal Chemistry
0
votes
1
answer
9
views
What is the coordination geometry and oxidation state of the metal ion in the active site of the metalloenzyme cytochrome c oxidase?
asked
Feb 12
in
Coordination Chemistry
0
votes
1
answer
10
views
How can the magnetic properties of various materials be analyzed to determine their suitability for use in high capacity data storage media?
asked
Feb 7
in
Materials Chemistry
0
votes
1
answer
11
views
How can the design of drugs targeting the dopamine receptor be optimized for the treatment of Parkinson's disease while minimizing side effects?
asked
Feb 7
in
Medicinal Chemistry
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votes
1
answer
49
views
Calculate the standard enthalpy change for the fusion of ice at 0°C to liquid water at 0°C, given that the enthalpy of fusion of ice is 6.01 kJ/mol and the molar mass of water is 18.015 g/mol.
asked
Feb 3
in
Chemical thermodynamics
0
votes
1
answer
76
views
How do changes in temperature affect the folding and stability of a specific protein structure? Use molecular dynamics simulations to analyze the role of temperature in the folding pathway and identify key structural changes that occur under different temperature conditions.
asked
Jan 31
in
Computational Chemistry
0
votes
1
answer
70
views
How can a chemical engineer develop a cost-effective process for the production of 1,4-dioxane with a high yield and purity using sustainable and environmentally-friendly methods?
asked
Jan 30
in
Chemical engineering
0
votes
1
answer
10
views
Determine the number of stereoisomers of 2-chlorobutane considering chirality and explain how the configuration of the stereoisomers differ.
asked
Jan 30
in
Organic Chemistry
0
votes
1
answer
66
views
What is the concentration of a specific compound in a given sample using liquid chromatography?
asked
Jan 30
in
Analytical Chemistry
0
votes
1
answer
60
views
How can we accurately determine the concentration of iron in a water sample using colorimetry, and what is the potential impact on human health if the concentration exceeds a certain threshold?
asked
Jan 29
in
Analytical Chemistry
0
votes
1
answer
53
views
Determine the structure of an unknown organic compound using nuclear magnetic resonance (NMR) spectroscopy, given the following information: - The compound has a molecular formula of C6H12O2 - The NMR spectrum shows signals at 1.2 ppm (triplet), 2.3 ppm (quartet), and 3.7 ppm (doublet).
asked
Jan 29
in
Analytical Chemistry
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