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0
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1
answer
21
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How do the properties of supramolecular systems change with changes in temperature?
asked
3 days
ago
in
Physical Chemistry
0
votes
1
answer
12
views
What is the most efficient and sustainable system for producing a new line of cosmetic products that reduces waste and incorporates eco-friendly materials, while ensuring product safety and efficacy?
asked
3 days
ago
in
Chemical engineering
0
votes
1
answer
27
views
What specific composition of metal alloys would be most effective in the fabrication of jet engine turbines for commercial airplanes, given the requirements of strength, durability, and operational temperature range?
asked
4 days
ago
in
Materials Chemistry
0
votes
1
answer
20
views
What is the effect of temperature on the adsorption of nitrogen gas on a solid surface? Provide experimental evidence to support your answer.
asked
5 days
ago
in
Surface Chemistry
0
votes
1
answer
17
views
What is the coordination number and geometry of the complex [Eu(en)₂(NO₃)₃] where Eu is europium, en is ethylenediamine, and NO₃ is nitrate ion? Also, explain the spectroscopic properties associated with europium in the complex.
asked
6 days
ago
in
Coordination Chemistry
0
votes
1
answer
23
views
How does the coordination environment of a metal ion in a metalloenzyme or metalloprotein affect its catalytic activity? Provide examples from at least three different metalloenzymes or metalloproteins and their respective substrates.
asked
6 days
ago
in
Coordination Chemistry
0
votes
1
answer
37
views
How does surface modification of nanoparticles affect their stability, reactivity, and interaction with biological systems?
asked
Feb 17
in
Surface Chemistry
0
votes
1
answer
33
views
How can the use of pesticides and fertilizers in sustainable agriculture be optimized to minimize their impact on the environment while still maintaining crop yields?
asked
Feb 14
in
Environmental Chemistry
0
votes
1
answer
27
views
How do the properties of nanoparticles change with their size and shape? Provide a detailed explanation with examples.
asked
Feb 13
in
Physical Chemistry
0
votes
1
answer
38
views
How can we improve the mechanical properties of a particular polymer used in biomedical applications without compromising its biocompatibility?
asked
Feb 13
in
Materials Chemistry
0
votes
1
answer
5
views
How can we design drugs that specifically target cancer cells without damaging healthy cells?
asked
Feb 12
in
Medicinal Chemistry
0
votes
1
answer
28
views
How can the magnetic properties of different materials be investigated and optimized for their use in data storage systems?
asked
Feb 7
in
Materials Chemistry
0
votes
1
answer
73
views
Design a heat exchanger for a factory that produces 10,000 liters of sulfuric acid per day starting at 70°C and needs to be cooled to 40°C for packaging. The available cooling water supply from the local municipal is at 20°C and is available at a flow rate of 1000 liters per minute. Design the heat exchanger to achieve the required temperature drop and calculate the heat transfer coefficient and the overall heat transfer coefficient.
asked
Feb 4
in
Chemical engineering
0
votes
1
answer
38
views
Calculate the standard electrode potential for the following redox reaction at 298K:Fe3+(aq) + e- → Fe2+(aq) Given the E°(Fe3+/Fe2+) = +0.77V.
asked
Feb 3
in
Chemical thermodynamics
0
votes
1
answer
42
views
How does changing the reactant concentration affect the rate of reaction in a reaction with a fixed stoichiometry?
asked
Feb 3
in
Chemical kinetics
0
votes
1
answer
82
views
What is the concentration of copper ions in a sample of water collected from a river using colorimetry?
asked
Jan 30
in
Analytical Chemistry
0
votes
1
answer
12
views
How can the presence of carboxylic acid functional group be identified in a given organic compound using UV-Vis spectroscopy and what is the significance of the absorption peak at a wavelength of 170-176 nm?
asked
Jan 29
in
Analytical Chemistry
+1
vote
1
answer
56
views
How can the concentration of a specific compound be determined in a sample using spectrophotometry? Provide a step-by-step explanation of the process, including the equations involved, and describe the necessary equipment and materials. Additionally, discuss potential sources of error and how they can be mitigated. Finally, provide an example of a practical application of this technique in real-world chemical analysis.
asked
Jan 29
in
Analytical Chemistry
0
votes
1
answer
40
views
When was the study on the effects of self-compassion on positive body image published?
asked
Jan 20
in
Psychology
0
votes
1
answer
40
views
What was the aim of the Rosenhan Experiment?
asked
Jan 20
in
Psychology
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