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Answers by SarahWeston5
0
votes
20
views
How does the size and shape of nanoparticles affect their catalytic activity in chemical reactions?
answered
1 day
ago
in
Materials Chemistry
0
votes
23
views
What are the optimal reaction conditions (temperature, pressure, and concentration) required for the preparation of 2,4-dichloronitrobenzene from nitrobenzene and chlorine gas, and how do these conditions affect the yield of the reaction?
answered
3 days
ago
in
Chemical synthesis
0
votes
21
views
What is the effect of different degrees of crosslinking on the mechanical properties of a polymer utilized in biomedical applications?
answered
6 days
ago
in
Materials Chemistry
0
votes
20
views
What is the critical micelle concentration (CMC) of a given surfactant, and how does changing the temperature and the pH of the solution affect its CMC?
answered
6 days
ago
in
Surface Chemistry
0
votes
20
views
What is the role of snRNPs (small nuclear ribonucleoproteins) in RNA splicing and how do they function in the spliceosome complex?
answered
Feb 14
in
BioChemistry
0
votes
34
views
What is the difference between primary, secondary, and tertiary amines, and how do their physical and chemical properties differ? Also, explain the various methods of preparation for amines and amides with suitable examples.
answered
Feb 14
in
Organic Chemistry
0
votes
8
views
How does the surface area of the catalyst impact the rate of reaction in heterogeneous catalysis? Provide specific examples from recent scientific research to support your answer.
answered
Feb 13
in
Surface Chemistry
0
votes
41
views
Calculate the standard enthalpy change (∆H°) for the reaction of the coordination compound [Co(NH3)6]Cl3 (aq) with NaOH (aq) to produce [Co(NH3)6](OH)3 (aq) and NaCl (aq). Given, the standard enthalpy of formation (∆H°f) for [Co(NH3)6]Cl3, [Co(NH3)6](OH)3 and NaCl are -784.8 kJ/mol, -1273.6 kJ/mol and -411.2 kJ/mol, respectively.
answered
Feb 3
in
Chemical thermodynamics
0
votes
73
views
Calculate the standard enthalpy change (∆H°) for the dissolution of 5.00 g of solid NaOH in 100.0 mL of water, given that the temperature of the solution increased from 25.0°C to 27.5°C. The density of the solution is 1.00 g/mL and the specific heat capacity of the solution is 4.18 J/(g°C). The molar mass of NaOH is 40.00 g/mol.
answered
Feb 3
in
Chemical thermodynamics
0
votes
58
views
How does changing the concentration of reactants affect the reaction rate and the resulting yield in the chemical reaction between sodium thiosulfate and hydrochloric acid?
answered
Feb 3
in
Chemical kinetics
0
votes
74
views
What strategies can a student use to better understand complex chemical concepts, such as chemical bonding, equilibrium, or thermodynamics?
answered
Jan 30
in
Chemical education
0
votes
73
views
What is the chemical formula of the unknown compound that has a molecular ion peak (M+) at m/z 146, and major fragment peaks at m/z 120 and 105 in the mass spectrum, and has the molecular ion peak four times more intense than the base peak? Use mass spectrometry to identify the unknown compound.
answered
Jan 30
in
Analytical Chemistry
+1
vote
48
views
What is the zone of proximal development ZPD ?
answered
Jan 20
in
Psychology
0
votes
27
views
Why is falsifiability an important criterion for evaluating neuroscience theories?
answered
Jan 20
in
Psychology
0
votes
38
views
Why is fear often used in persuasive messages?
answered
Jan 17
in
Psychology
0
votes
62
views
What is the role of discourse in discursive psychology?
answered
Jan 17
in
Psychology
0
votes
11
views
How can developmental psychology contribute to the design of AI models?
answered
Jan 17
in
Psychology
0
votes
37
views
According to cognitive-behavioral therapy, what is the relationship between thoughts, feelings, and behavior?
answered
Jan 17
in
Psychology
0
votes
32
views
Describe Lewin's field theory?
answered
Jan 15
in
Psychology
0
votes
24
views
Why is the Inclusive Fitness Theory relevant to AI models for collective decision making?
answered
Jan 15
in
Psychology
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