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1
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How does the size and shape of nanomaterials affect their catalytic activity in a specific chemical reaction?
asked
Feb 24
in
Materials Chemistry
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votes
1
answer
29
views
How does the pH level affect the rate of photochemical reactions in the presence of a certain type of photosensitizer?
asked
Feb 22
in
PhotoChemistry
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1
answer
30
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What is the efficiency of a photosensitizer in converting light energy to a reactive species? Provide a brief explanation of the photochemical mechanism involved.
asked
Feb 20
in
Physical Chemistry
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votes
1
answer
34
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What is the effect of changing the concentration of reactants and products on the rate of a chemical equilibrium reaction, and how can this be experimentally determined using a simple apparatus?
asked
Feb 19
in
Chemical kinetics
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votes
1
answer
30
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How does the composition of glasses affect their refractive index and transmission properties, and how can these properties be optimized for use in optical applications such as lenses or fiber optics?
asked
Feb 18
in
Materials Chemistry
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votes
1
answer
35
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How does the chemical composition of crude oil affect its impact on the environment after a spill?
asked
Feb 18
in
Environmental Chemistry
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1
answer
28
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What is the bond dissociation energy (in kJ/mol) of the O-H bond in a water molecule if the energy required to break this bond is 464 kJ/mol?
asked
Feb 18
in
ThermoChemistry
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votes
1
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42
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How does the addition of nanoparticles affect the mechanical properties of polymer nanocomposites, and what is the optimal concentration of nanoparticles for improving strength and toughness without sacrificing flexibility?
asked
Feb 17
in
Polymer Chemistry
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1
answer
42
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How can quantum chemical calculations be effectively used to predict and analyze the strength and nature of non-covalent interactions, such as hydrogen bonding or van der Waals interactions, between molecules in a complex chemical system?
asked
Feb 5
in
Computational Chemistry
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1
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88
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A chemistry student is asked to determine the effect of temperature and pressure on the equilibrium of the reaction: 2NO2(g) ⇋ N2O4(g) using Le Chatelier’s principle. The initial concentration of NO2(g) is 0.5 mol/L and the reaction is carried out at 25°C. How will the equilibrium shift if the temperature is increased to 100°C and the pressure is decreased to 0.5 atm?
asked
Jan 22
in
Chemical reactions
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votes
1
answer
47
views
Where is the ventral pathway located in the brain?
asked
Jan 20
in
Psychology
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votes
1
answer
81
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Why is ecological systems theory useful in understanding the impact of poverty on development?
asked
Jan 17
in
Psychology
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1
answer
39
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How does the use of heuristics relate to theory evaluation?
asked
Jan 17
in
Psychology
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1
answer
133
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Where does the disengagement theory sit within the aging theories?
asked
Jan 16
in
Psychology
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1
answer
30
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What is the difference between task-oriented and people-oriented leadership?
asked
Jan 16
in
Psychology
0
votes
1
answer
126
views
What is social identity theory and how is it different to social learning theory?
asked
Jan 15
in
Psychology
0
votes
1
answer
50
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What are defense mechanisms?
asked
Jan 13
in
Psychology
0
votes
1
answer
47
views
Wings of bats and birds serve the same function. which body part should you study to understand ancestral differences?
asked
Jan 8
in
Science
0
votes
1
answer
49
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Which principle states that two species cannot occupy the same niche in a habitat?
asked
Jan 8
in
Science
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1
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62
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Which part of an earthquake is in the ground where the ground breaks?
asked
Jan 8
in
Science
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