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1
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29
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What is the predicted bond angle for the H2O molecule and what are the factors that affect this angle?
asked
Feb 22
in
Chemical bonding
0
votes
1
answer
24
views
What is the mechanism of the photochemical reaction that occurs between benzene and chlorine gas to form chlorobenzene in the presence of sunlight?
asked
Feb 22
in
PhotoChemistry
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1
answer
29
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What is the effect of surface charge on the electrophoretic mobility of colloidal particles in an aqueous medium?
asked
Feb 20
in
Surface Chemistry
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1
answer
29
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How does the coordination geometry and ligand arrangement of the metal ion in metalloenzymes and metalloproteins affect their enzymatic activity and substrate specificity?
asked
Feb 19
in
Coordination Chemistry
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votes
1
answer
35
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How does the choice of photosensitizer affect the efficiency of photochemical reactions?
asked
Feb 18
in
PhotoChemistry
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1
answer
36
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How does the chemical structure of DNA affect its interaction with specific proteins involved in gene regulation?
asked
Feb 18
in
BioChemistry
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votes
1
answer
56
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What are the predominant intermolecular forces present in a sample of water and how do they contribute to its unique properties?
asked
Feb 13
in
Chemical bonding
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1
answer
62
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What is the retrosynthetic analysis of ibuprofen and what are the possible starting materials and reaction steps for its synthesis?
asked
Feb 13
in
Organic Chemistry
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votes
1
answer
31
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How can the synthesis of metal nanoparticles be optimized for size and shape in order to improve their catalytic activity and stability?
asked
Feb 11
in
Materials Chemistry
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votes
1
answer
69
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Calculate the standard enthalpy change of the precipitation reaction between 50.0 mL of 0.100 M Pb(NO3)2 and excess 0.100 M NaCl solution at 25°C given that the reaction is Pb(NO3)2 (aq) + 2NaCl (aq) → PbCl2(s) + 2NaNO3 (aq) and the enthalpy of formation of NaNO3 (aq) and NaCl (aq) are -467.7 kJ/mol and -411.2 kJ/mol respectively.
asked
Feb 3
in
Chemical thermodynamics
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1
answer
57
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Calculate the standard enthalpy change for the phase transition reaction of ice to water at a constant pressure of 1 atm, given the following information:- The standard enthalpy of fusion for ice is 6.01 kJ/mol.- The molar heat capacity of ice is 36.8 J/(mol K).- The molar heat capacity of liquid water is 75.3 J/(mol K).- The melting point of ice is 0°C.- The boiling point of water is 100°C.
asked
Feb 3
in
Chemical thermodynamics
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1
answer
89
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Identify the number of resonance structures for the molecule of benzene and draw all of them.
asked
Jan 31
in
Chemical bonding
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votes
1
answer
99
views
What are the chemical reactions that occur when acid rain interacts with soil minerals, and how do these reactions affect the availability of nutrients for plants?
asked
Jan 30
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Environmental Chemistry
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1
answer
107
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What is the concentration of copper ions in a given water sample using voltammetry?
asked
Jan 30
in
Analytical Chemistry
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votes
1
answer
60
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Calculate the equilibrium constant for the reaction: 2 NOCl(g) ⇌ 2 NO(g) + Cl2(g) if at equilibrium the concentrations are [NOCl] = 0.050 M, [NO] = 0.030 M, and [Cl2] = 0.020 M.
asked
Jan 23
in
Chemical equilibrium
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1
answer
94
views
What is the oxidation state of the carbon atom in an ethanol molecule after it undergoes oxidation?
asked
Jan 21
in
Organic Chemistry
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1
answer
58
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Please evaluate the frustration-aggression hypothesis.
asked
Jan 20
in
Psychology
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1
answer
101
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How does the psychodynamic theory explain personality?
asked
Jan 17
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Psychology
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1
answer
90
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What is the difference between indigenous and Western conceptions of mental health?
asked
Jan 16
in
Psychology
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1
answer
84
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How can the principles of the cognitive-behavioural approach be applied in practice?
asked
Jan 15
in
Psychology
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