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Answers by JuanitaPiess
0
votes
27
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How does the presence of supramolecular assemblies affect the photochemical properties of certain molecules, and how can this knowledge be used in the design of more efficient photo-responsive materials?
answered
5 days
ago
in
PhotoChemistry
0
votes
25
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
5 days
ago
in
PhotoChemistry
0
votes
24
views
What is the effect of pH and temperature on the electrokinetic potential of a colloidal system containing silica nanoparticles?
answered
Feb 20
in
Surface Chemistry
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votes
27
views
What are the possible resonance structures of the carbonate ion (CO3-2) and how do they contribute to its stability?
answered
Feb 18
in
Chemical bonding
0
votes
25
views
How does the addition of clay nanoparticles impact the mechanical properties of a polymer matrix?
answered
Feb 17
in
Polymer Chemistry
0
votes
31
views
What are the chemical compounds present in air pollutants that have the greatest impact on human health, and how can we effectively monitor and control their concentrations to reduce the risk of long-term adverse health effects?
answered
Feb 14
in
Environmental Chemistry
0
votes
27
views
How can we use quantum chemistry calculations to predict the selectivity of a catalyst towards a specific reaction pathway?
answered
Feb 14
in
Quantum Chemistry
0
votes
34
views
How do the photochemical properties of enantiomers differ from each other? Provide examples with explanations.
answered
Feb 13
in
PhotoChemistry
0
votes
26
views
How can we design a small molecule drug that selectively targets and inhibits the activity of the autoimmune cell signaling pathway while avoiding unwanted side effects on healthy cells and tissues?
answered
Feb 12
in
Medicinal Chemistry
0
votes
46
views
Calculate the standard enthalpy change for the fusion reaction of solid sodium chloride (NaCl) at 25°C, given the following information: ΔHf°[NaCl(s)] = -411 kJ/molΔHf°[Na(s)] = 108 kJ/molΔHf°[Cl2(g)] = 0 kJ/mol The balanced chemical equation for the fusion reaction of NaCl is:NaCl(s) → Na(s) + 1/2Cl2(g)
answered
Feb 3
in
Chemical thermodynamics
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52
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Calculate the standard enthalpy change (ΔH°) for the reduction of iron(III) oxide (Fe2O3) to iron (Fe) given the following balanced chemical equation:2Fe2O3(s) + 3C(s) → 4Fe(s) + 3CO2(g)The enthalpy of formation for Fe2O3(s) is -824.2 kJ/mol and the enthalpy of formation for CO2(g) is -393.5 kJ/mol. All other substances are in their standard state.
answered
Feb 3
in
ThermoChemistry
0
votes
82
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What is the effect of adding a small amount of nickel to a titanium alloy on the strength and corrosion resistance of the alloy, and how does this influence its suitability for aerospace applications?
answered
Jan 30
in
Materials Chemistry
0
votes
68
views
How would adding more reactants to a reaction at equilibrium affect the direction of the reaction and the equilibrium position, and what would be the quantitative effect on the equilibrium constant?
answered
Jan 22
in
Chemical equilibrium
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81
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What is the IUPAC name of the following organic compound: CH3-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3 Hint: This is a linear alkane with 10 carbon atoms.
answered
Jan 21
in
Organic Chemistry
0
votes
72
views
What are the implications of the modularity hypothesis for neuropsychology?
answered
Jan 20
in
Psychology
0
votes
68
views
When might the 'hierarchy of needs' be relevant?
answered
Jan 20
in
Psychology
0
votes
41
views
What is the role of cortisol in stress?
answered
Jan 17
in
Psychology
0
votes
33
views
What is the difference between a placebo and a nocebo?
answered
Jan 16
in
Psychology
0
votes
42
views
Where do discursive psychologists believe that knowledge comes from?
answered
Jan 15
in
Psychology
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votes
26
views
When evaluating the dual process model of coping with bereavement, what weakness can be pointed out?
answered
Jan 15
in
Psychology
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