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Questions by PercyEdmonds
0
votes
1
answer
26
views
How does the temperature and pressure affect the phase transition of water from liquid to gas as modeled through Monte Carlo simulations?
asked
3 days
ago
in
Computational Chemistry
0
votes
1
answer
22
views
What is the optimum reaction conditions required for the synthesis of polyvinylpyrrolidone from vinylpyrrolidone monomer, and how do these conditions affect the molecular weight and viscosity of the resulting polymer?
asked
3 days
ago
in
Chemical synthesis
0
votes
1
answer
21
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How does the molecular weight of a polymer affect its mechanical properties for successful use in 3D printing?
asked
4 days
ago
in
Materials Chemistry
0
votes
1
answer
21
views
What is the mechanism of micelle formation by soap molecules in the Surface chemistry of detergents and cleaning agents, and how does it lead to effective cleaning of oily substances from various surfaces?
asked
4 days
ago
in
Surface Chemistry
0
votes
1
answer
21
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In the coordination chemistry of transition metals, what is the effect of the geometry of the ligand coordination sphere on the magnetic properties of transition metal complexes? Provide examples to illustrate your answer.
asked
5 days
ago
in
Coordination Chemistry
0
votes
1
answer
16
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What is the coordination geometry of the complex [CoCl₂(NH₃)₄]⁺, as determined by its UV-Vis spectra?
asked
6 days
ago
in
Coordination Chemistry
0
votes
1
answer
32
views
How does the concentration of greenhouse gases in Earth's atmosphere affect the global temperature? Provide specific examples of greenhouse gases and their contribution to global warming.
asked
6 days
ago
in
Environmental Chemistry
0
votes
1
answer
23
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How does the composition of a landfill leachate impact the pH and nutrient levels of groundwater in surrounding areas over a period of time?
asked
6 days
ago
in
Environmental Chemistry
0
votes
1
answer
15
views
How does the amount and type of oil spilled in a marine environment affect the biodegradation rate and toxicity level of the spilled oil, and what are the potential long-term effects on the ecosystem?
asked
Feb 17
in
Environmental Chemistry
0
votes
1
answer
7
views
What are the key parameters to consider for optimizing the production process of a specific food additive and how can these parameters be controlled and monitored to ensure consistent high-quality output?
asked
Feb 14
in
Chemical engineering
0
votes
1
answer
3
views
What actions can be taken by chemistry teachers to emphasize the importance of safety protocols to students, and how can students be encouraged to take safety precautions seriously in the chemistry lab?
asked
Feb 12
in
Chemical education
0
votes
1
answer
34
views
How can the synthesis of polyethylene terephthalate from terephthalic acid and ethylene glycol be optimized to achieve a higher yield and purity of the final product?
asked
Feb 11
in
Chemical synthesis
0
votes
1
answer
45
views
Calculate the value of standard enthalpy change for the sublimation of solid iodine at 25°C. The molar heat capacity of iodine (s) is 54.44 J/mol·K and its molar entropy of sublimation is 62.43 J/mol·K. The standard entropy of formation of iodine (s) is 62.80 J/mol·K.
asked
Feb 3
in
Chemical thermodynamics
0
votes
1
answer
78
views
How can we design engaging and interactive chemistry lessons to increase student interest and participation in chemistry classes?
asked
Jan 30
in
Chemical education
+1
vote
1
answer
75
views
A chemistry student needs to quantify the amount of iron (II) ions in a sample using colorimetry. The sample was prepared by dissolving a known mass of iron (II) sulfate in water, and the solution was diluted to a known volume. The student needs to determine the concentration of iron (II) ions in the original solution by measuring the absorbance of the sample using a colorimeter, and then using calibration curves to convert the absorbance to concentration. The student also needs to calculate the percentage error of the experiment and suggest ways to improve the accuracy of the results.
asked
Jan 22
in
Analytical Chemistry
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votes
1
answer
82
views
A chemistry experiment involves burning a sample of propane gas, C3H8, and measuring the heat released. If 2.00 grams of propane is burned completely to produce CO2(g) and H2O(l), and the heat of combustion is found to be -2044 kJ/mol, what is the heat released in kJ when 2.00 grams of propane is burned?
asked
Jan 22
in
ThermoChemistry
0
votes
1
answer
78
views
One possible question related to Aldehydes and ketones in Organic Chemistry for a student to solve is:What is the reaction mechanism and final products of the reaction between propanal and sodium hydroxide in the presence of water?
asked
Jan 21
in
Organic Chemistry
0
votes
1
answer
55
views
According to the attribution theory, what are the three dimensions of attribution?
asked
Jan 20
in
Psychology
0
votes
1
answer
36
views
Where does the humanistic approach suggest that psychological problems come from?
asked
Jan 20
in
Psychology
0
votes
1
answer
39
views
What is the purpose of a scatterplot?
asked
Jan 20
in
Psychology
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