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What is the most effective catalyst and optimal reaction conditions for the synthesis of polypropylene from propylene monomer?
asked
Feb 21
in
Chemical synthesis
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votes
1
answer
26
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How does the cooling rate affect the crystal size in the polymerization process of polyethylene?
asked
Feb 19
in
Polymer Chemistry
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1
answer
33
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What is the effect of transition metal complex composition and ligand substitution on the photochemical properties, such as light absorption and energy transfer, of the complex?
asked
Feb 18
in
PhotoChemistry
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1
answer
26
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What is the balanced chemical equation for the preparation of phenylalanine from benzyl chloride and ammonia, and what is the theoretical yield of phenylalanine that can be obtained from 50 g of benzyl chloride and an excess of ammonia?
asked
Feb 17
in
Chemical synthesis
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1
answer
32
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How does the application of external fields affect the quantum transport properties of molecules in nanoscale systems?
asked
Feb 17
in
Quantum Chemistry
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1
answer
28
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What is the impact of pH and lipophilicity on the absorption and distribution of a specific drug in the human body?
asked
Feb 17
in
Medicinal Chemistry
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1
answer
55
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How can the synthesis of zeolites be improved to produce materials with greater efficiency and selectivity for specific applications?
asked
Feb 13
in
Materials Chemistry
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1
answer
64
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How can the presence of heavy metals in water bodies negatively impact the growth and reproduction of fish populations, and what chemical remediation methods can be used to remove heavy metals from bodies of water to prevent aquatic toxicity?
asked
Feb 10
in
Environmental Chemistry
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votes
1
answer
38
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How can the molecular weight of polyethylene be controlled during its synthesis from ethylene monomer, and how does this impact the final properties of the polyethylene product?
asked
Feb 10
in
Chemical synthesis
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votes
1
answer
29
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How can chemistry students have access to additional resources and textbooks when the availability of these resources is limited?
asked
Feb 5
in
Chemical education
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votes
1
answer
69
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Calculate the percentage change in the concentration of reactants and products in a chemical equilibrium when the concentration of a common ion is increased by 0.1M. The equilibrium constant for the reaction is Kc = 1.5 x 10^-5 M at a certain temperature.
asked
Feb 3
in
Chemical equilibrium
0
votes
1
answer
86
views
What is the impact of the use of wind turbines on local bird populations in a specific region?
asked
Jan 31
in
Environmental Chemistry
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votes
1
answer
106
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A chemistry student needs to calculate the new value of the ionization constant (Ka) of a weak acid when the temperature is raised from 25°C to 45°C, given that the initial value of Ka is 1.8 x 10^-5 at 25°C and the enthalpy of ionization (ΔHion) is 50.2 kJ/mol.
asked
Jan 22
in
Chemical equilibrium
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1
answer
99
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A 2.5 L container was initially filled with 0.1 M solution of nitrogen dioxide which decomposes into nitrogen monoxide and oxygen gas according to the following reaction:2NO2(g) ⇌ 2NO(g) + O2(g)After the system has reached equilibrium, the concentration of nitrogen monoxide is found to be 0.05 M. What is the equilibrium concentration of oxygen gas in the container?
asked
Jan 22
in
Chemical equilibrium
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votes
1
answer
36
views
According to the intersectional embodiment model, why is it important to consider multiple social identities?
asked
Jan 20
in
Psychology
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1
answer
59
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What is the first law of psychophysics?
asked
Jan 20
in
Psychology
0
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1
answer
77
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Where does the criterion of scope fit in theory evaluation?
asked
Jan 16
in
Psychology
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0
answers
65
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When did Don Meichenbaum introduce the concept of self-instructional training?
asked
Jan 16
in
Psychology
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1
answer
71
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Who proposed the Theory of Resilience?
asked
Jan 16
in
Psychology
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1
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57
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When was the constructivist theory of perception proposed?
asked
Jan 15
in
Psychology
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