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User ArlenBieber1
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How do the photochemical properties of photochromic materials such as spiropyrans and diarylethenes affect their ability to undergo photochromic reactions when exposed to light of different wavelengths?
asked
3 days
ago
in
PhotoChemistry
0
votes
1
answer
31
views
How does the order of nucleotides in DNA determine the sequence of amino acids in a protein during RNA transcription and translation?
asked
3 days
ago
in
BioChemistry
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votes
1
answer
32
views
How do the electronic and optical properties of perovskite materials change with different dopants and dopant concentrations?
asked
5 days
ago
in
Quantum Chemistry
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votes
1
answer
27
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How does the addition of a catalyst affect the energy barrier of a reaction mechanism and ultimately the rate of reaction, as predicted by density functional theory calculations?
asked
Feb 17
in
Computational Chemistry
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votes
1
answer
29
views
Identify the type of inorganic compound formed between sodium and chlorine atoms in sodium chloride?
asked
Feb 14
in
Inorganic Chemistry
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votes
1
answer
7
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What impact do residual levels of the commonly used insecticide Chlorpyrifos have on human health when ingested through contaminated food items?
asked
Feb 12
in
Environmental Chemistry
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1
answer
55
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How can the properties of ceramics be modified to optimize their performance in high-temperature applications such as furnace linings and gas turbine components?
asked
Feb 10
in
Materials Chemistry
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1
answer
28
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How can the production process of a specific specialty chemical be optimized to minimize waste and improve cost-effectiveness while maintaining high product quality and purity?
asked
Feb 10
in
Chemical engineering
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votes
1
answer
25
views
How can the performance of polymer-based membranes for water treatment be improved in terms of pore size, permeability, and selectivity while maintaining mechanical stability and durability?
asked
Feb 10
in
Polymer Chemistry
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votes
1
answer
53
views
Calculate the standard enthalpy change for the neutralization of 50 mL of 0.1 M hydrochloric acid with 50 mL of 0.1 M sodium hydroxide at a constant temperature of 25°C, given that the specific heat capacity of the resulting solution is 4.18 J/g°C and its density is 1 g/mL.
asked
Feb 3
in
Chemical thermodynamics
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votes
1
answer
55
views
How does changing the volume affect the equilibrium position of a chemical reaction? Provide an example of a reaction and calculate the new equilibrium concentrations when the volume is decreased by a certain factor.
asked
Feb 3
in
Chemical equilibrium
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votes
1
answer
77
views
What is the predicted effect of increasing the pressure on the equilibrium position of the reaction between nitrogen and hydrogen to form ammonia, N2(g) + 3 H2(g) ⇌ 2 NH3(g), at a constant temperature and volume?
asked
Jan 30
in
Chemical equilibrium
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1
answer
48
views
A sealed vessel contains a mixture of nitrogen dioxide and dinitrogen tetraoxide gases in equilibrium. If the volume of the container is increased, would the equilibrium shift towards more or less NO2? Calculate the new equilibrium constant at the new volume assuming the pressure and temperature remain constant.
asked
Jan 22
in
Chemical equilibrium
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1
answer
58
views
What is the oxidation state of chlorine in FeCl3?
asked
Jan 21
in
Inorganic Chemistry
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votes
1
answer
51
views
When evaluating a theory, what is the criterion for explanatory power?
asked
Jan 20
in
Psychology
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votes
1
answer
37
views
According to the test-retest reliability theory, what is practice effect?
asked
Jan 20
in
Psychology
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votes
1
answer
32
views
Why is interrater reliability important?
asked
Jan 17
in
Psychology
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votes
1
answer
10
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Where can F-tests be used in psychology research?
asked
Jan 17
in
Psychology
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votes
1
answer
49
views
When treating substance use disorders, what is motivational interviewing?
asked
Jan 17
in
Psychology
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1
answer
20
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What is the behavioural model of psychological disorders?
asked
Jan 16
in
Psychology
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