Login
Remember
Register
Science Q&A Sarvan.Net
All Activity
Q&A
Questions
Hot!
Unanswered
Tags
Categories
Users
Ask a Question
About Us
XML Sitemap
Terms of Service
User ElenaBranco0
Wall
Recent activity
All questions
All answers
Ask a Question
Questions by ElenaBranco0
0
votes
1
answer
22
views
How does the reaction rate affect the overall profitability of a chemical process, and what factors can be manipulated to increase the reaction rate without compromising product quality?
asked
3 days
ago
in
Chemical kinetics
0
votes
1
answer
23
views
What is the mechanism of the reaction for the preparation of 2,4-dinitrobenzoic acid from benzoic acid and nitric acid?
asked
3 days
ago
in
Chemical synthesis
0
votes
1
answer
22
views
How do the intrinsic electronic and optical properties of a conjugated polymer depend on its molecular structure and the nature of substituents attached to its backbone?
asked
5 days
ago
in
Quantum Chemistry
0
votes
1
answer
26
views
How does the degree of crosslinking affect the surface energy and adhesion properties of a polymer coating on a certain substrate?
asked
6 days
ago
in
Polymer Chemistry
0
votes
1
answer
25
views
What is the coordination number of a [Ce(H2O)9]3+ ion in an aqueous solution, assuming an octahedral geometry for the complex?
asked
6 days
ago
in
Coordination Chemistry
0
votes
1
answer
26
views
What is the mechanism of the acid-catalyzed cleavage of an ether using hydroiodic acid?
asked
Feb 17
in
Organic Chemistry
0
votes
1
answer
32
views
What is the effect of temperature and pH on the surface tension of lipid bilayers in biomembranes?
asked
Feb 17
in
Surface Chemistry
0
votes
1
answer
25
views
What is the effect of surface modification on the properties of polyethylene? Specifically, how does the introduction of polar functional groups onto the surface of polyethylene affect its adhesion properties when subjected to water?
asked
Feb 17
in
Surface Chemistry
0
votes
1
answer
27
views
How does the phenomenon of quantum coherence and entanglement affect the behavior of electron transport in molecular and nanoscale systems, and how can this information be utilized in the design of more efficient electronic devices?
asked
Feb 14
in
Quantum Chemistry
0
votes
1
answer
26
views
Identify the types of isomerism present in the complex [Co(NH3)4Cl2]+ and draw their structural formulas.
asked
Feb 13
in
Coordination Chemistry
0
votes
1
answer
36
views
What is the effect of heavy metals such as lead and mercury on the behavior of aquatic organisms, and how do these contaminants accumulate in the food web?
asked
Feb 13
in
Environmental Chemistry
0
votes
1
answer
34
views
How does the chirality of a molecule affect its photochemical properties in terms of absorption and emission spectra? Provide specific examples of chiral molecules and their corresponding spectra to support your answer.
asked
Feb 12
in
PhotoChemistry
0
votes
1
answer
38
views
How can the surface properties of a biomaterial be modified to enhance its biocompatibility and reduce the risk of rejection by the human body's immune system?
asked
Feb 11
in
Surface Chemistry
0
votes
1
answer
53
views
Calculate the standard enthalpy of formation of methanol, CH3OH (l), given that the standard enthalpy of combustion of methanol is -726.4 kJ/mol and the standard enthalpy of formation of carbon dioxide and water are -393.5 kJ/mol and -285.8 kJ/mol, respectively.
asked
Feb 3
in
ThermoChemistry
0
votes
1
answer
66
views
What measures can be taken to increase the awareness and implementation of safety protocols in chemistry labs in order to prevent accidents and promote safe experimentation?
asked
Jan 30
in
Chemical education
0
votes
1
answer
54
views
Calculate the extent of polarization for a cell in which a copper electrode is coupled with a silver electrode at 25°C. The copper electrode has a potential of -0.34 V and the silver electrode has a potential of 0.80 V. The initial concentration of copper ions and silver ions in the solution are 0.001 M and 0.01 M, respectively. The total resistance of the cell (including both the electrolyte and the external circuit) is 10 ohms. Assume that the transfer coefficient for both the copper and silver ions is 0.5, and the Faraday constant is 96,485 C/mol.
asked
Jan 23
in
ElectroChemistry
0
votes
1
answer
56
views
A student wishes to determine the standard reduction potential of an unknown metal electrode in a half-cell. They set up an electrochemical cell using a known standard hydrogen electrode (SHE) as the reference electrode and the unknown metal electrode as the working electrode. A voltmeter is used to measure the potential difference between the two electrodes. The reading is +0.45 V. What is the standard reduction potential of the unknown metal electrode in volts?
asked
Jan 22
in
Physical Chemistry
0
votes
1
answer
30
views
Where does the concept of 'existential crisis' fit within the broader context of psychology?
asked
Jan 20
in
Psychology
0
votes
1
answer
61
views
According to the social cognitive theory, how do people learn to cope with trauma?
asked
Jan 17
in
Psychology
0
votes
1
answer
28
views
According to the cognitive-behavioural model, how does exposure therapy work for PTSD?
asked
Jan 17
in
Psychology
Page:
1
2
next »
35.9k
questions
35.7k
answers
2
comments
7.0k
users
Categories
All categories
Science
(12.0k)
Psychology
(10.5k)
Chemistry
(13.4k)
Welcome to Sarvan Science Q&A, where you can ask questions and receive answers from other members of the community.
...