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User BeatriceJ11
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19
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How does the prediction of electronic and magnetic properties of molecular magnets vary with changing molecular structures?
answered
3 days
ago
in
Quantum Chemistry
0
votes
18
views
How does the polarity of the solvent affect the rate of a photochemical reaction in a specific chemical system and what is the underlying mechanism behind it?
answered
3 days
ago
in
PhotoChemistry
0
votes
18
views
What is the optimal reaction conditions to maximize the yield of polyethylene in the synthesis of polyethylene from ethylene monomer?
answered
3 days
ago
in
Chemical synthesis
0
votes
16
views
What is the Lewis structure of the carbon dioxide (CO2) molecule?
answered
4 days
ago
in
Chemical bonding
0
votes
23
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What are the key factors affecting the growth of carbon nanotubes using chemical vapor deposition method, and how can they be optimized to produce longer and more uniform nanotubes with desired properties?
answered
5 days
ago
in
Materials Chemistry
0
votes
20
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What is the critical micelle concentration (CMC) of sodium dodecyl sulfate (SDS) in water at 30°C? Provide a detailed explanation of the factors affecting the formation of micelles and how they relate to the CMC of SDS.
answered
6 days
ago
in
Surface Chemistry
0
votes
44
views
How can the selectivity of polymer-based membranes for water treatment be improved while maintaining their permeability?
answered
Feb 10
in
Polymer Chemistry
0
votes
9
views
How can the efficiency of a cosmetic production system be improved through the design of a more stable emulsion base?
answered
Feb 7
in
Chemical engineering
0
votes
82
views
What are the key material properties that make ceramics suitable for high-temperature applications, and how can these properties be optimized or improved through chemical and material design?
answered
Jan 31
in
Materials Chemistry
0
votes
10
views
How can we reduce the carbon footprint of our transportation system, considering the impact on the environment and energy efficiency?
answered
Jan 31
in
Environmental Chemistry
0
votes
73
views
What are some effective study strategies and techniques that can help improve preparation for chemistry exams?
answered
Jan 30
in
Chemical education
0
votes
62
views
Calculate the enthalpy change for the combustion of 2 moles of methane gas (CH4) at constant pressure, given that the standard enthalpy of formation (ΔHf) of methane gas is -74.8 kJ/mol. Express your answer in kilojoules (kJ).
answered
Jan 23
in
Chemical thermodynamics
0
votes
45
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Assuming that the student has knowledge about the harmonic oscillator model, the problem could be:Calculate the molecular vibrational frequencies and corresponding infrared spectra of a carbon monoxide (CO) molecule using the harmonic oscillator model. Given the following bond lengths and force constants:- Bond length of the CO bond in the ground state: 1.128 angstroms- Force constant of the CO bond in the ground state: 1880 N/m
answered
Jan 22
in
Quantum Chemistry
0
votes
73
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A student is given the electrochemical cell reaction:MnO4-(aq) + 8H+(aq) + 5e- → Mn2+(aq) + 4H2O(l)Calculate the standard potential (in volts) of the cell at 25°C given that the standard reduction potential of MnO4-(aq)/Mn2+(aq) couple and the standard reduction potential of the H+(aq)/H2(g) couple are +1.51 V and 0.00 V, respectively. The concentration of MnO4-(aq) is 0.010 M and that of H+(aq) is 1.00 M.
answered
Jan 22
in
ElectroChemistry
0
votes
64
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A chemistry student is given an unknown compound and is asked to identify its molecular formula using mass spectrometry. The compound has a molecular ion peak at m/z 86 and fragments at m/z 43 and 58. What is the molecular formula of the unknown compound?
answered
Jan 22
in
Analytical Chemistry
0
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115
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Balance the following chemical equation of an inorganic compound: Fe2O3 + CO → Fe + CO2
answered
Jan 21
in
Inorganic Chemistry
0
votes
50
views
How do the principles of optimism, hope and gratitude relate to positive psychology outcomes?
answered
Jan 20
in
Psychology
0
votes
30
views
How can social identity theory help us understand intergroup conflict?
answered
Jan 20
in
Psychology
0
votes
63
views
How can peer support help with recovery from mental illness?
answered
Jan 20
in
Psychology
0
votes
26
views
How does methylphenidate affect the brain?
answered
Jan 20
in
Psychology
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