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 WilbertNorri
Wall
Recent activity
All questions
All answers
Ask a Question
Answers by WilbertNorri
0
votes
13
views
How does the reaction rate of a chemical reaction change when the solvent is changed from water to ethanol?
answered
Feb 22
in
Chemical kinetics
0
votes
37
views
What is the relationship between the reaction rate and equilibrium constant for the reaction between potassium iodate and sodium sulfite in acidic aqueous solution, and how does the addition of a catalyst affect this relationship?
answered
Feb 22
in
Chemical kinetics
0
votes
30
views
What are the factors that affect the pharmacokinetic properties of a drug, and how can these properties be optimized to improve its therapeutic effectiveness?
answered
Feb 22
in
Medicinal Chemistry
0
votes
24
views
What is the major product obtained from the reaction between 2-bromo-2-methylbutane and alcoholic potassium hydroxide, and why?
answered
Feb 20
in
Organic Chemistry
0
votes
28
views
What is the effect of varying concentrations of water as a solvent on the reaction rate of a given chemical reaction?
answered
Feb 20
in
Chemical kinetics
0
votes
27
views
How does the doping concentration of boron and phosphorus affect the electronic properties of a silicon semiconductor, and how can this knowledge be applied in the design and optimization of electronic devices?
answered
Feb 19
in
Materials Chemistry
0
votes
37
views
How does the concentration and size of microplastics directly affect the toxicity and bioaccumulation potential in marine organisms like plankton and fish in a given area?
answered
Feb 18
in
Environmental Chemistry
0
votes
35
views
What is the role of metal ions in metalloenzymes and metalloproteins? How does the coordination chemistry of these metal ions affect the biological function of these molecules?
answered
Feb 13
in
Coordination Chemistry
0
votes
92
views
How does the inadequate emphasis on chemical reactions and equations affect a chemistry student's understanding of chemical education?
answered
Feb 13
in
Chemical education
0
votes
69
views
How can the synthesis and characterization of new cathode materials improve the performance and durability of fuel cells? What specific properties should be optimized in order to achieve better fuel cell performance and durability?
answered
Feb 11
in
Materials Chemistry
0
votes
60
views
How can the properties of polymer-based electronic materials be tailored to improve their performance in organic solar cells?
answered
Feb 10
in
Polymer Chemistry
0
votes
31
views
How can chemistry educators increase the everyday relevance of the subject to students who have limited exposure to chemistry in their daily lives?
answered
Feb 4
in
Chemical education
0
votes
60
views
Calculate the standard enthalpy change for the neutralization reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH), given the balanced chemical equation: HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l). The enthalpies of formation for NaCl(aq) and H2O(l) are -407.3 kJ/mol and -285.8 kJ/mol, respectively. The specific heat capacity of the solution is 4.18 J/(g*K), and the mass of the resulting solution is 100 g.
answered
Feb 3
in
Chemical thermodynamics
0
votes
55
views
Calculate the standard enthalpy change for the neutralization reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH) in aqueous solutions. The balanced chemical equation for the reaction is as follows:HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l) Given the enthalpy of formation for HCl(aq) is -167.2 kJ/mol, NaOH(aq) is -469.14 kJ/mol, NaCl(aq) is -407.3 kJ/mol, and H2O(l) is -285.83 kJ/mol. The reaction is carried out at standard temperature and pressure.
answered
Feb 3
in
Chemical thermodynamics
0
votes
74
views
What is the chemical structure of a compound that gives a specific peak at 7.2 ppm in a Carbon-13 Nuclear Magnetic Resonance (NMR) spectrum?
answered
Jan 31
in
Physical Chemistry
0
votes
91
views
How can advanced oxidation processes (AOPs) be utilized for the efficient degradation of emerging pollutants in the environment using photochemical reactions? Compare and contrast the effectiveness of different AOPs in degrading various types of pollutants found in different environmental matrices, highlighting the key reaction mechanisms and reaction pathways involved.
answered
Jan 31
in
PhotoChemistry
0
votes
91
views
Sure, here's a question for the student to solve:What is the chemical process responsible for the formation of acid mine drainage, and how does it impact the pH levels and metal concentrations in surface water and groundwater near a mine site?
answered
Jan 30
in
Environmental Chemistry
0
votes
66
views
Using an ion-selective electrode, a student measures the concentration of chloride ions in a solution as 0.20 M. The solution also contains either nitrate or sulfate ions. How can the student determine which ion(s) is present in the solution and calculate their concentration?
answered
Jan 30
in
Analytical Chemistry
0
votes
54
views
How can we apply capillary electrophoresis to accurately determine the levels of different amino acids present in a protein sample?
answered
Jan 29
in
Analytical Chemistry
0
votes
52
views
According to Fechner's Law, how does perceived intensity change with changes in physical intensity?
answered
Jan 20
in
Psychology
Page:
1
2
next »
37.4k
questions
37.2k
answers
2
comments
14.6k
users
Categories
All categories
Science
(12.0k)
Psychology
(10.5k)
Chemistry
(14.9k)
Welcome to Sarvan Science Q&A, where you can ask questions and receive answers from other members of the community.
...