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How do the photochemical properties of supramolecular assemblies differ from those of individual molecules and how can this knowledge be applied in the design of novel light-responsive materials?
asked
Feb 22
in
PhotoChemistry
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votes
1
answer
27
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What is the most efficient and optimal method for the preparation of 2,4-dinitrophenylhydrazine from hydrazine and 2,4-dinitrochlorobenzene, considering yield, purity, and safety measures?
asked
Feb 21
in
Chemical synthesis
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votes
1
answer
34
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How can we predict the catalytic activity and selectivity of a given catalyst using quantum chemistry? Please provide examples of catalysts and their predicted performance based on quantum chemistry calculations.
asked
Feb 14
in
Quantum Chemistry
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votes
1
answer
33
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What is the mechanism by which persistent organic pollutants (POPs) accumulate in the food chain and what are the potential health and environmental risks associated with these compounds?
asked
Feb 14
in
Environmental Chemistry
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1
answer
59
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How can the photochemical properties of bioluminescent organisms be utilized in the development of new biomaterials for medical applications?
asked
Feb 10
in
PhotoChemistry
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votes
1
answer
52
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How can industrial waste disposal practices be modified to minimize their negative impact on the environment? Provide recommendations based on chemical properties and reactions of the waste, as well as best practices for disposal methods.
asked
Feb 5
in
Environmental Chemistry
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votes
1
answer
41
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How can computational chemistry and molecular modeling be used to simulate the behavior of chemical compounds in different environments, and how can these simulations be validated experimentally?
asked
Feb 5
in
Physical Chemistry
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votes
1
answer
36
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How can chemistry departments secure sufficient funding to improve their teaching infrastructure and provide better educational opportunities for students?
asked
Feb 4
in
Chemical education
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votes
1
answer
73
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Given the chemical equation for the oxidation of iron (Fe) to form iron(III) oxide (Fe2O3), determine the oxidation state of iron in both the reactant and product.
asked
Feb 4
in
Chemical reactions
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votes
1
answer
133
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What is the chemical formula of the unknown compound that has a molecular ion peak (M+) at m/z 146, and major fragment peaks at m/z 120 and 105 in the mass spectrum, and has the molecular ion peak four times more intense than the base peak? Use mass spectrometry to identify the unknown compound.
asked
Jan 30
in
Analytical Chemistry
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1
answer
71
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How can the concentration of an unknown substance in a given sample be determined using polarography and what factors affect the accuracy of the method?
asked
Jan 29
in
Analytical Chemistry
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1
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72
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Calculate the enthalpy change for the oxidation of methane (CH4) to carbon dioxide (CO2) at constant pressure using the following reactions: * C(s) + O2(g) --> CO2(g) ΔH = -393.5 kJ/mol* 2H2(g) + O2(g) --> 2H2O(l) ΔH = -571.6 kJ/molThe enthalpy of formation of CH4(g) is -74.8 kJ/mol.
asked
Jan 23
in
ThermoChemistry
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1
answer
85
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What is the main criticism of the cross-cultural approach to psychology?
asked
Jan 20
in
Psychology
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votes
1
answer
52
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According to Maslow's hierarchy of needs, what are the basic needs that humans must satisfy?
asked
Jan 20
in
Psychology
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votes
1
answer
69
views
How can behavioural principles be applied in the workplace?
asked
Jan 17
in
Psychology
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votes
1
answer
41
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Where did Albert Ellis develop his rational emotive behaviour therapy approach?
asked
Jan 17
in
Psychology
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votes
1
answer
15.8k
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According to the Cognitive Dissonance Theory, what happens when people hold inconsistent beliefs?
asked
Jan 17
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Psychology
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votes
1
answer
75
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Who proposed the concept of the cognitive model of PTSD?
asked
Jan 17
in
Psychology
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1
answer
119
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According to social identity theory, what is group polarisation?
asked
Jan 16
in
Psychology
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1
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38
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What is mindfully paying attention?
asked
Jan 14
in
Psychology
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