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What is the most efficient and effective method for synthesizing ZSM-5 zeolites with high catalytic activity for the conversion of methanol to olefins?
asked
Feb 21
in
Materials Chemistry
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votes
1
answer
35
views
How does the coordination environment around the metal ion in a metalloenzyme affect its catalytic activity towards a specific substrate? Provide a detailed analysis of the coordination chemistry of at least one metalloenzyme and its role in catalysis.
asked
Feb 19
in
Coordination Chemistry
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1
answer
31
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How does the absorption spectra of a dye or pigment change with changing pH?
asked
Feb 17
in
PhotoChemistry
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1
answer
31
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How do persistent organic pollutants (POPs) affect the pH levels of soil and water in their respective environments?
asked
Feb 14
in
Environmental Chemistry
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1
answer
56
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How do the properties of liquid crystals differ from those of ordinary liquids, and what applications do these unique properties have in modern technology?
asked
Feb 13
in
Physical Chemistry
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1
answer
64
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What is the effect of increasing the concentration of reactants on the rate of a chemical reaction when the concentration of one product is kept constant, and the concentration of another product is gradually increased?
asked
Feb 13
in
Chemical kinetics
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1
answer
50
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How can the synthesis of polyacrylonitrile from acrylonitrile monomer be optimized to achieve the highest possible molecular weight of the resulting polymer?
asked
Feb 11
in
Chemical synthesis
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votes
1
answer
64
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How can the specific surface area of a porous material be accurately determined using gas adsorption techniques?
asked
Feb 10
in
Surface Chemistry
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votes
1
answer
72
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Calculate the standard enthalpy of formation for magnesium oxide (MgO) given the standard enthalpy of formation for magnesium (Mg) is -601.8 kJ/mol and the standard enthalpy of formation for oxygen (O₂) is 0 kJ/mol.
asked
Feb 3
in
ThermoChemistry
0
votes
1
answer
104
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Please list some of the cultural dimensions that have been identified by Hofstede.
asked
Jan 16
in
Psychology
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1
answer
59
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When was the theory of Social Identity developed?
asked
Jan 15
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Psychology
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1
answer
72
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What is the difference between a sensation and a perception threshold?
asked
Jan 13
in
Psychology
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1
answer
40
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What is critical psychology?
asked
Jan 13
in
Psychology
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1
answer
81
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Which of the animals digest cellulose with the aid of methanogens?
asked
Jan 8
in
Science
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votes
1
answer
48
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While components of a mixture can be separated by physical means, the components of a pure substance can only be broken down through what means?
asked
Jan 8
in
Science
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1
answer
82
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What is the nervous tissue in the brain and in the rest of the nervous system made up of?
asked
Jan 7
in
Science
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votes
1
answer
24
views
What do communication satellites carry and use to provide energy during their missions?
asked
Jan 6
in
Science
0
votes
1
answer
111
views
What are the "levels" in a food chain or web called?
asked
Jan 3
in
Science
0
votes
1
answer
50
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Ultimately, most life forms get their energy from this?
asked
Jan 2
in
Science
0
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1
answer
89
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How did lamarck believe species change over time?
asked
Dec 30, 2024
in
Science
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