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What is the optimum reaction temperature for the synthesis of polyvinylpyrrolidone from vinylpyrrolidone monomer using different catalysts and what effect do these catalysts have on the reaction?
answered
Feb 22
in
Chemical synthesis
0
votes
26
views
What is the most efficient and effective method to prepare phenylalanine from benzyl chloride and ammonia, and how can you achieve the highest yield possible?
answered
Feb 21
in
Chemical synthesis
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votes
40
views
What is the dipole moment of the molecule CHCl3 and in which direction does it point?
answered
Feb 19
in
Chemical bonding
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votes
42
views
How can we optimize the design and properties of drug delivery systems to enhance the bioavailability, targeting, and therapeutic efficacy of a drug?
answered
Feb 14
in
Medicinal Chemistry
0
votes
33
views
How can we design drugs for the treatment of Alzheimer's disease that can effectively target and inhibit the activity of beta-amyloid protein aggregation in the brain?
answered
Feb 12
in
Medicinal Chemistry
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votes
46
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How can the synthesis of new materials be optimized to enhance their ability to effectively remove contaminants from water sources?
answered
Feb 11
in
Materials Chemistry
0
votes
70
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Determine the standard enthalpy of formation of methane (CH4) given the following information: The standard enthalpy of formation of CO2 and H2O are -393.5 kJ/mol and -285.8 kJ/mol, respectively. The combustion of 0.50 g of methane in a bomb calorimeter resulted in a 1.20°C temperature increase of the surrounding water. The heat capacity of the bomb calorimeter is 5.85 kJ/°C.
answered
Feb 4
in
Chemical thermodynamics
0
votes
106
views
How does a deficiency in the enzyme lipoprotein lipase affect the metabolism and transport of different types of lipids in the body?
answered
Jan 30
in
BioChemistry
0
votes
90
views
What is the concentration of copper ions in a given water sample using polarography?
answered
Jan 30
in
Analytical Chemistry
0
votes
168
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What is the concentration (in mol/L) of an HCl solution if 25.00 mL of this solution is required to neutralize 0.015 moles of NaOH in a titration?
answered
Jan 30
in
Analytical Chemistry
0
votes
66
views
A chemistry student needs to determine the concentration of a certain analyte in a water sample using colorimetry. The student has access to a spectrophotometer and a standard calibration curve. What is the concentration of the analyte in the water sample, given its absorbance value in the spectrophotometer and the calibration curve data?
answered
Jan 22
in
Analytical Chemistry
0
votes
87
views
What is the central concept of the humanist approach?
answered
Jan 20
in
Psychology
0
votes
35
views
Please compare the psychological and physical symptoms of depression.
answered
Jan 20
in
Psychology
0
votes
49
views
Why was the experiment of Pavlov's dogs important?
answered
Jan 20
in
Psychology
0
votes
195
views
How has behaviourism contributed to understanding the role of reward in motivation?
answered
Jan 17
in
Psychology
0
votes
66
views
According to Piaget, why do children develop cognitive abilities?
answered
Jan 16
in
Psychology
0
votes
104
views
When did Tajfel conduct his minimal group experiments?
answered
Jan 15
in
Psychology
0
votes
36
views
How is the social ecological model used in community psychology?
answered
Jan 15
in
Psychology
0
votes
40
views
What is the relationship between intelligence and creativity?
answered
Jan 14
in
Psychology
0
votes
31
views
What is the significance of identity foreclosure in adolescent development?
answered
Jan 14
in
Psychology
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