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Questions by NadineKzd354
0
votes
1
answer
23
views
What is the effect of temperature on the reaction rate and safety of the reaction between hydrogen peroxide and potassium iodide?
asked
3 days
ago
in
Chemical kinetics
0
votes
1
answer
2
views
How does the prediction of chemical reactivity and selectivity using quantum chemistry methods aid in the design of new drugs with specific target molecules?
asked
3 days
ago
in
Quantum Chemistry
0
votes
1
answer
31
views
How does the liver's Phase I and Phase II metabolic reactions affect the efficacy and toxicity of a drug in the body?
asked
4 days
ago
in
Medicinal Chemistry
0
votes
1
answer
20
views
How does the addition of a catalyst (such as catalase) affect the rate of decomposition of hydrogen peroxide?
asked
Feb 17
in
Chemical kinetics
0
votes
1
answer
7
views
How does phosphorylation affect the activation of enzymes in the MAP Kinase signaling pathway and what is the role of ATP in this process?
asked
Feb 14
in
BioChemistry
0
votes
1
answer
31
views
How do persistent organic pollutants (POPs) affect the aquatic environment in terms of biological magnification, and what measures can be taken to mitigate their impact?
asked
Feb 14
in
Environmental Chemistry
0
votes
1
answer
7
views
What are the key structural features and functional groups required in designing drugs to effectively target and treat neurological disorders such as Alzheimer's and Parkinson's?
asked
Feb 12
in
Medicinal Chemistry
0
votes
1
answer
32
views
How can the synthesis of nylon-6,6 from adipic acid and hexamethylenediamine be optimized to achieve a maximum yield and purity of the final product? What are the key reaction parameters that need to be controlled and how can they be manipulated to improve the synthesis process?
asked
Feb 11
in
Chemical synthesis
0
votes
1
answer
7
views
How can the process of designing a system for the storage and transportation of hazardous chemicals be optimized to ensure maximum safety for both workers and the environment?
asked
Feb 10
in
Chemical engineering
0
votes
1
answer
35
views
How can the adsorption capacity of activated carbon for a specific pollutant be determined and optimized?
asked
Feb 6
in
Surface Chemistry
0
votes
1
answer
39
views
How can electrokinetic remediation technology be utilized to clean up heavy metal contaminants from contaminated soil?
asked
Feb 6
in
Environmental Chemistry
0
votes
1
answer
50
views
Develop a process for the purification of caffeine from tea leaves using solvent extraction technique. Provide a detailed explanation of the steps involved in the process and the criteria that will determine the efficiency of the procedure.
asked
Feb 4
in
Chemical engineering
0
votes
1
answer
47
views
Determine the standard enthalpy change of the precipitation reaction between aqueous solutions of copper (II) sulfate and calcium hydroxide, given that the reaction produces copper (II) hydroxide, solid calcium sulfate and water as the products. The initial concentrations of the solutions are 0.1 M for copper (II) sulfate and 0.05 M for calcium hydroxide, and the reaction takes place at constant pressure and temperature of 25°C.
asked
Feb 4
in
Chemical thermodynamics
0
votes
1
answer
35
views
Calculate the standard enthalpy change for the fusion of 2.5 moles of ice at 0℃ to form water at 0℃. Given that the molar enthalpy of fusion of ice is 6.01 kJ/mol and the specific heat capacity of water is 4.18 J/g·℃.
asked
Feb 3
in
Chemical thermodynamics
0
votes
1
answer
45
views
Calculate the overpotential for the reduction reaction of Ag+ to Ag on a silver electrode at 25°C with a current density of 0.5 A/cm2. The standard reduction potential of Ag+ to Ag is 0.799 V vs. the standard hydrogen electrode. The activation energy for this reaction is 65.0 kJ/mol, the transfer coefficient is 0.4 and the reaction order is 1.5.
asked
Feb 3
in
ElectroChemistry
0
votes
1
answer
51
views
Calculate the number of electrons transferred in the electrochemical reaction when a solution of silver nitrate is added to a copper electrode and a salt bridge is used to complete the circuit.
asked
Feb 3
in
ElectroChemistry
0
votes
1
answer
66
views
A chemist performed a reaction that was supposed to produce 25 grams of the desired product. However, upon measuring the amount of product produced, it was found that only 18 grams were obtained. Calculate the percent yield of the reaction.
asked
Jan 22
in
Chemical reactions
0
votes
1
answer
44
views
Compare Piaget's and Vygotsky's theories of cognitive development.
asked
Jan 20
in
Psychology
0
votes
1
answer
52
views
Please compare the stages of cognitive development proposed by Piaget and Vygotsky.
asked
Jan 20
in
Psychology
0
votes
1
answer
34
views
Why did Erikson propose the concept of ego identity?
asked
Jan 17
in
Psychology
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