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0
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39
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How does the presence of reaction intermediates affect the rate of a chemical reaction and what experimental techniques can be used to investigate this effect?
answered
3 days
ago
in
Chemical kinetics
0
votes
24
views
What is the optimum reaction conditions for the synthesis of polyethylene from ethylene monomer and how do they affect the yield and properties of the polymer?
answered
4 days
ago
in
Chemical synthesis
0
votes
19
views
What is the most efficient catalyst for the synthesis of polypropylene from propylene monomer and how does its concentration affect the yield and properties of the resultant polymer?
answered
4 days
ago
in
Chemical synthesis
0
votes
30
views
What is the effect of the molecular weight of a polymer on the properties of the resulting coating or paint?
answered
4 days
ago
in
Polymer Chemistry
0
votes
15
views
What is the heat of sublimation for dry ice (solid carbon dioxide) given that its enthalpy of fusion is 9.2 kJ/mol and its enthalpy of vaporization is 25.1 kJ/mol?
answered
5 days
ago
in
ThermoChemistry
0
votes
20
views
How do the electronic and magnetic properties of transition metal complexes vary with the change in ligands and the oxidation state of the metal center?
answered
5 days
ago
in
Quantum Chemistry
0
votes
27
views
What is the effect of the molecular weight and polymer chain structure on the electrical conductivity of conductive polymers for use in flexible electronics?
answered
5 days
ago
in
Materials Chemistry
0
votes
21
views
What is the relationship between the conjugation length of a polymer and its optical properties, such as absorption and emission spectra? How can we calculate the excited states of conjugated polymers using quantum mechanical methods?
answered
6 days
ago
in
Quantum Chemistry
0
votes
35
views
How can the process for the production of detergents be optimized to increase yield and improve the environmental impact of the production process?
answered
Feb 10
in
Chemical engineering
0
votes
35
views
How can computational chemistry and molecular modeling be used to simulate the behavior of chemical compounds in different environments, and how can these simulations be validated experimentally?
answered
Feb 6
in
Physical Chemistry
0
votes
53
views
Design a heat exchanger for a chemical process that involves cooling 1000 kg of a liquid from 80°C to 40°C using water as the cooling fluid. The process flow rate is 5 kg/min and the maximum allowable pressure drop in the heat exchanger is 5 kPa. Assume a heat transfer coefficient of 1000 W/m²K for the liquid and 5000 W/m²K for the water. Design the heat exchanger to occupy a maximum area of 20 m². What is the surface area of the heat exchanger required and what would be the optimal flow configuration?
answered
Feb 4
in
Chemical engineering
0
votes
69
views
What are the effects of branching and crosslinking on the physical properties of polymers? Provide specific examples of how branching and crosslinking affect the glass transition temperature, crystallinity, and mechanical properties of polymers.
answered
Jan 31
in
Physical Chemistry
0
votes
61
views
How can Raman spectroscopy be used to determine the presence of a specific compound in a mixture of similar compounds? Specifically, how can the unique Raman spectra of the target compound be identified and distinguished from those of other compounds in the mixture, and what is the minimum concentration of the target compound that can be detected using this technique?
answered
Jan 29
in
Analytical Chemistry
0
votes
63
views
Identify and draw the structural isomers of C6H12 that contain at least one triple bond.
answered
Jan 21
in
Organic Chemistry
0
votes
44
views
What is interpersonal hypersensitivity and how does it relate to borderline personality disorder?
answered
Jan 17
in
Psychology
0
votes
46
views
How might cognitive-behavioural theory impact end-of-life care?
answered
Jan 17
in
Psychology
0
votes
51
views
Where might a humanistic psychologist look for the cause of self-esteem issues?
answered
Jan 17
in
Psychology
0
votes
33
views
According to humanistic psychology, what is self-actualisation?
answered
Jan 16
in
Psychology
0
votes
49
views
According to Erik Erikson, what is the primary developmental task of adolescence?
answered
Jan 15
in
Psychology
0
votes
11
views
When do we use signal detection theory?
answered
Jan 15
in
Psychology
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