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What is the relationship between the structure and electronic properties of metal-organic frameworks, and how can quantum chemistry be used to predict magnetic properties of these materials?
answered
1 day
ago
in
Quantum Chemistry
0
votes
1
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How does the presence of different functional groups affect the photophysical properties of organic molecules and how can this be utilized in designing novel light-emitting materials?
answered
3 days
ago
in
Quantum Chemistry
0
votes
14
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How does the photoexcitation wavelength affect the luminescent properties of materials doped with europium ions under ambient conditions?
answered
3 days
ago
in
PhotoChemistry
0
votes
18
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What is the effect of increasing temperature on the formation of a complex ion in a chemical equilibrium reaction? Use a balanced chemical equation and appropriate equilibrium constants to support your answer.
answered
6 days
ago
in
Chemical equilibrium
0
votes
26
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What is the mechanism of the Beckmann rearrangement reaction, and what factors influence its rate and selectivity? Provide a detailed explanation and examples of how this reaction can be applied in organic synthesis.
answered
Feb 17
in
Organic Chemistry
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19
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How does the addition of various metal oxides affect the optical properties (refractive index, dispersion, transmission, etc.) of glass?
answered
Feb 17
in
Materials Chemistry
0
votes
22
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What factors affect the rate of the reaction between hydrochloric acid and magnesium ribbon in water, and how can these factors be manipulated to increase or decrease the rate of the reaction?
answered
Feb 14
in
Inorganic Chemistry
0
votes
32
views
What is the effect of reactant orientation on the reaction rate of a hydrochloric acid and sodium thiosulfate reaction?
answered
Feb 14
in
Chemical kinetics
0
votes
9
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How can we design drugs that specifically target and kill cancer cells while leaving healthy cells intact?
answered
Feb 12
in
Medicinal Chemistry
0
votes
36
views
What are the chemical components present in crude oil and how do they impact the environment when an oil spill occurs?
answered
Feb 12
in
Environmental Chemistry
0
votes
52
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How does the coordination chemistry of metalloenzymes and metalloproteins impact their biological function? Provide specific examples and discuss the implications for the development of novel drug targets.
answered
Feb 12
in
Coordination Chemistry
0
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46
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Calculate the standard enthalpy change for the reaction: C6H12O6 (s) + 6O2 (g) → 6CO2 (g) + 6H2O (l)Given the following standard enthalpies of formation: ΔHf(C6H12O6 (s)) = -1273 kJ/molΔHf(CO2 (g)) = -393.5 kJ/molΔHf(H2O (l)) = -285.8 kJ/mol
answered
Feb 3
in
Chemical thermodynamics
0
votes
54
views
Calculate the specific surface area of a catalyst using BET theory, given that the quantity of gas physically adsorbed at a certain temperature and pressure is 0.25 moles, the molar volume of the gas is 22.4 L/mol, the weight of the catalyst used is 0.5 g, and the monolayer coverage of the adsorbate is 0.2.
answered
Feb 3
in
Surface Chemistry
0
votes
56
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Calculate the reaction quotient, Q, for the following balanced chemical reaction at 298 K:2NO(g) + O2(g) ⇌ 2NO2(g)Given that the initial concentrations of NO, O2 and NO2 are 0.10 M, 0.15 M and 0.05 M, respectively.
answered
Feb 3
in
Chemical thermodynamics
0
votes
69
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What are some common misconceptions or misunderstandings that students have when learning about the periodic table and chemical elements, and how can these be addressed and overcome through effective chemical education techniques?
answered
Jan 30
in
Chemical education
0
votes
55
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Calculate the bond order of the molecule NO using molecular orbital theory, given that the nitrogen atom has four valence electrons and the oxygen atom has six valence electrons.
answered
Jan 23
in
Chemical bonding
0
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102
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A student needs to calculate the standard enthalpy of formation of magnesium oxide, MgO, using Hess's Law. The student has access to the following reactions and their corresponding enthalpy changes:1. Mg(s) + 1/2O2(g) → MgO(s) ΔH = -601.8 kJ/mol2. Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) ΔH = -450.7 kJ/mol3. H2(g) + 1/2O2(g) → H2O(l) ΔH = -285.8 kJ/molWhat is the standard enthalpy of formation of MgO from its elements?
answered
Jan 22
in
ThermoChemistry
0
votes
75
views
How does the social disorganisation theory explain the role of neighbourhood factors in violence?
answered
Jan 20
in
Psychology
0
votes
26
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What is the main aim of Gestalt psychology?
answered
Jan 16
in
Psychology
0
votes
39
views
Outline social penetration theory
answered
Jan 15
in
Psychology
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