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Questions by Dawn49061396
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votes
1
answer
26
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What is the mechanism of the reaction between 2-methylpropene and hydrobromic acid in the presence of peroxide? What are the intermediates formed during the reaction and how do they contribute to the overall reaction mechanism?
asked
3 days
ago
in
Organic Chemistry
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votes
1
answer
18
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How does the presence of one drug affect the metabolism of another drug in the human body, and what are the potential consequences of drug-drug interactions on the efficacy and safety of medicinal treatments?
asked
3 days
ago
in
Medicinal Chemistry
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votes
1
answer
11
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What is the critical temperature of nitrogen and why is it important in industrial applications?
asked
6 days
ago
in
Physical Chemistry
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votes
1
answer
24
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What is the best method for synthesizing high molecular weight polyvinylpyrrolidone from vinylpyrrolidone monomer?
asked
Feb 17
in
Chemical synthesis
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1
answer
30
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How does the surface modification of biomaterials using plasma treatment affect the wettability and biocompatibility of the materials?
asked
Feb 17
in
Surface Chemistry
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1
answer
32
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What factors contribute to the stability of inorganic compounds and how do these factors affect the compound's structure and reactivity?
asked
Feb 14
in
Inorganic Chemistry
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1
answer
45
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What is the magnetic susceptibility of a benzene molecule and how does it change upon the addition of a nickel atom to the molecule? Calculate the values using quantum chemistry calculations and explain the observed changes in magnetic properties.
asked
Feb 13
in
Quantum Chemistry
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1
answer
38
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How do intermolecular interactions and solvation effects affect the stability of drug molecules in aqueous solutions?
asked
Feb 13
in
Quantum Chemistry
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votes
1
answer
8
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How do the photochemical properties of enantiomers differ and what are the implications of these differences in chemistry and in everyday life?
asked
Feb 13
in
PhotoChemistry
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votes
1
answer
50
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What is the density functional theory calculation prediction for the electronic transport properties (conductance and current-voltage curves) of a graphene nanoribbon with zigzag edges, and how does it compare to experimental measurements?
asked
Feb 12
in
Computational Chemistry
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votes
1
answer
37
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How can the molecular weight and branching of polymers affect the drug release rate in polymer-based drug delivery systems?
asked
Feb 10
in
Polymer Chemistry
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votes
1
answer
57
views
Calculate the standard enthalpy change for the formation of water vapor (H2O (g)) from its elements, given that the standard enthalpy of formation of hydrogen gas (H2(g)) is -241.8 kJ/mol and the standard enthalpy of formation of oxygen gas (O2(g)) is 0 kJ/mol.
asked
Feb 3
in
Chemical thermodynamics
+1
vote
1
answer
54
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Calculate the molar mass of ammonium sulfate ((NH4)2SO4), given that the atomic masses of nitrogen, hydrogen, sulfur, and oxygen are 14.01 g/mol, 1.01 g/mol, 32.06 g/mol, and 16.00 g/mol, respectively.
asked
Jan 23
in
Inorganic Chemistry
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votes
1
answer
55
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Calculate the equilibrium constant (K) of the electrochemical reaction below at 25°C: 2AgCl(s) + H2(g) <--> 2Ag(s) + 2HCl(aq) Given: E°AgCl/Ag = 0.22 V E°HCl/H2 = 0.00 V Kw = 1.0 x 10^-14 at 25°C Standard Hydrogen Electrode (SHE) has E° = 0.00 V
asked
Jan 23
in
ElectroChemistry
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votes
1
answer
49
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Calculate the corrosion rate of a steel rod when it is placed in a galvanic coupling with a copper strip at 25°C. The initial weight of the steel rod was 28.6 g and it lost 0.48 g in weight after 24 hours of exposure. The area of the steel rod in contact with the electrolyte solution is 3.14 cm² and the electrode potential of the copper strip is +0.34V while the electrode potential of the steel rod is -0.44V. Using Faraday’s law of electrolysis, determine the corrosion rate of the steel rod in mmpy (mils per year).
asked
Jan 23
in
ElectroChemistry
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1
answer
63
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A student wants to calculate the efficiency of an electrochemical cell with a standard potential of -0.74 volts. The cell is set up with a copper electrode immersed in a solution of copper(II) sulfate and a silver electrode immersed in a solution of silver nitrate, connected by a salt bridge. The student measures a current of 0.5 amperes flowing through the cell for a duration of 60 minutes. Calculate the efficiency of the electrochemical cell in terms of the amount of reactants consumed and the amount of product formed.
asked
Jan 22
in
ElectroChemistry
0
votes
1
answer
43
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According to Bandura's social learning theory, how do individuals learn?
asked
Jan 20
in
Psychology
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1
answer
31
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What does the social learning theory by Albert Bandura suggest?
asked
Jan 20
in
Psychology
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votes
1
answer
38
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Why is the sociocultural model relevant in evaluating eating disorders?
asked
Jan 16
in
Psychology
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votes
1
answer
40
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Who is associated with cognitive psychology?
asked
Jan 16
in
Psychology
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