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How does the signal transduction pathway use chemical reactions to convey information from the cell membrane to the nucleus?
asked
Feb 24
in
BioChemistry
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votes
1
answer
34
views
How does the polarity of a solvent affect the strength of intermolecular interactions between molecules in a solution?
asked
Feb 22
in
Quantum Chemistry
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votes
1
answer
43
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How does the orientation of reactant molecules affect the rate of the chemical reaction between sodium thiosulfate and hydrochloric acid in a solution of varying temperatures?
asked
Feb 22
in
Chemical kinetics
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1
answer
27
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What is the optimal doping concentration of boron in silicon for the fabrication of high-performance solar cells? How does the concentration of boron in silicon affect the electrical properties of the resulting semiconductor material?
asked
Feb 21
in
Materials Chemistry
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1
answer
34
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What is the effect of different extraction techniques on the pharmacological activity of natural products used for medicinal purposes?
asked
Feb 20
in
Medicinal Chemistry
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1
answer
25
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What is the effect of the excitation wavelength on the fluorescence emission of Rhodamine B dye in aqueous solution?
asked
Feb 20
in
PhotoChemistry
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1
answer
29
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How does the coordination of metal ions to enzymes and proteins affect their catalytic activity? Give examples of metalloenzymes and metalloproteins and explain their structural and functional roles in biological systems.
asked
Feb 19
in
Coordination Chemistry
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votes
1
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35
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What is the effect of the chemical structure of dyes and pigments on their photochemical properties, specifically their absorption spectra and photostability under UV radiation?
asked
Feb 18
in
PhotoChemistry
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votes
1
answer
35
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What specific photochemical properties can be observed in supramolecular assemblies composed of porphyrin and fullerenes, and how do these properties differ from those of the individual components?
asked
Feb 17
in
PhotoChemistry
0
votes
1
answer
77
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Determine the standard enthalpy of formation of nitrogen dioxide (NO2) given that the balanced equation for the combustion of one mole of NO2 is:4NO2(g) + 6H2O(l) → 4HNO3(aq) + 2NO(g)The standard enthalpies of formation for HNO3(l), H2O(l), and NO(g) are -174.1 kJ/mol, -285.8 kJ/mol, and 90.4 kJ/mol, respectively.
asked
Feb 4
in
Chemical thermodynamics
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votes
1
answer
89
views
How can Raman spectroscopy be used to identify the specific type and concentration of a particular compound (e.g. glucose) in a complex mixture (e.g. blood serum)?
asked
Jan 29
in
Analytical Chemistry
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1
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42
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A solution containing two different dye molecules of different sizes (methyl blue and eosin) is kept in a glass tube. Using the knowledge of diffusion and transport phenomena, calculate the time required for the eosin molecules to diffuse to a distance of 10 cm from the source of the solution, if the diffusion coefficient of eosin is known to be 2.5 x 10^-10 m^2/s.
asked
Jan 22
in
Physical Chemistry
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1
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50
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According to Freud, how does the mind function?
asked
Jan 20
in
Psychology
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votes
1
answer
96
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How does the frustration-aggression theory explain the link between frustration and aggression?
asked
Jan 20
in
Psychology
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1
answer
57
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How might self-determination theory inform end-of-life decision-making?
asked
Jan 20
in
Psychology
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1
answer
60
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What is the role of psychology in forensic investigations?
asked
Jan 20
in
Psychology
0
votes
1
answer
107
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According to the interpersonal-neurobiological model of auditory hallucinations, what are the two factors that contribute to their development?
asked
Jan 17
in
Psychology
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1
answer
108
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What are some limitations of humanistic psychology?
asked
Jan 15
in
Psychology
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1
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106
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What is the name of the behaviourist who proposed the principles of operant conditioning?
asked
Jan 13
in
Psychology
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1
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53
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What is the relationship between authenticity and anxiety in existential psychology?
asked
Jan 13
in
Psychology
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