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 REHJon915716
Wall
Recent activity
All questions
All answers
Ask a Question
Questions by REHJon915716
0
votes
1
answer
17
views
What is the optimal reaction temperature and time required for the synthesis of nylon-6,6 from adipic acid and hexamethylenediamine to achieve maximum yield and purity?
asked
3 days
ago
in
Chemical synthesis
0
votes
1
answer
34
views
How does the molecular weight distribution affect the rheological properties of polymer melts?
asked
4 days
ago
in
Polymer Chemistry
0
votes
1
answer
17
views
What is the bond order of a nitrogen molecule (N2)?
asked
Feb 18
in
Chemical bonding
0
votes
1
answer
34
views
What is the predicted color of a compound containing a transition metal ion with an oxidation state of +3 in an octahedral geometry?
asked
Feb 14
in
Inorganic Chemistry
0
votes
1
answer
25
views
How do persistent organic pollutants (POPs) affect the pH levels of soil and water in their respective environments?
asked
Feb 14
in
Environmental Chemistry
0
votes
1
answer
36
views
What would be the effect on the degree of ionization of a weak acid like acetic acid in a solution containing it along with 1 M of hydrochloric acid?
asked
Feb 13
in
Chemical equilibrium
0
votes
1
answer
30
views
What type of intermolecular forces are present in a liquid sample of ethanol?
asked
Feb 13
in
Chemical bonding
0
votes
1
answer
31
views
How does the excessive use of fertilizers contribute to eutrophication in aquatic ecosystems and what are the potential consequences for the environment and human health?
asked
Feb 13
in
Environmental Chemistry
0
votes
1
answer
9
views
How can we design drugs for the treatment of Alzheimer's disease that can effectively target and inhibit the activity of beta-amyloid protein aggregation in the brain?
asked
Feb 12
in
Medicinal Chemistry
0
votes
1
answer
39
views
How to design a feasible and economical system that produces pure hydrogen fuel with a high yield while minimizing energy consumption, by utilizing the principles of chemical engineering and taking into account the potential impact on the environment?
asked
Feb 12
in
Chemical engineering
0
votes
1
answer
43
views
How do Chlorofluorocarbons (CFCs) specifically degrade the ozone layer and what chemical reactions occur in the process?
asked
Feb 12
in
Environmental Chemistry
0
votes
1
answer
9
views
How can the synthesis of polymer-based superabsorbent materials be optimized to achieve the highest absorption capacity and stability under different environmental conditions?
asked
Feb 11
in
Polymer Chemistry
0
votes
1
answer
33
views
Calculate the standard enthalpy change for the combustion of ethene gas (C2H4(g)) to form carbon dioxide gas (CO2(g)) and water vapor (H2O(g)), given the following thermochemical equations: C2H4(g) + 3O2(g) → 2CO2(g) + 2H2O(g) ΔH°=-1411 kJ/mol2H2(g) + O2(g) → 2H2O(g) ΔH°=-484 kJ/mol
asked
Feb 3
in
Chemical thermodynamics
0
votes
1
answer
71
views
What is the concentration of lead (Pb) in a water sample collected from a industrial site using atomic absorption spectroscopy?
asked
Jan 30
in
Analytical Chemistry
0
votes
1
answer
49
views
How can the concentration of copper ion (Cu2+) in a given sample be quantified using polarography?
asked
Jan 29
in
Analytical Chemistry
0
votes
1
answer
58
views
Calculate the lattice energy of MgO if the charge on the magnesium ion is +2 and the charge on the oxide ion is -2. The ionic radius of Mg2+ is 0.072 nm and the ionic radius of O2- is 0.140 nm.
asked
Jan 23
in
Inorganic Chemistry
0
votes
1
answer
52
views
Calculate the formal charge of nitrogen in the molecule NO₃⁻.
asked
Jan 23
in
Chemical bonding
0
votes
1
answer
69
views
A student conducted an electrochemical reaction using a copper electrode to reduce a solution containing Ag+ ions. The standard reduction potential for Ag+ is 0.80 V and the standard reduction potential for Cu2+ is 0.34 V. The student measured the cell potential to be 0.62 V. Calculate the overpotential of the reaction and determine if the reduction of Ag+ occurs spontaneously.
asked
Jan 22
in
ElectroChemistry
0
votes
1
answer
85
views
What is the pKa of acetic acid (CH3COOH) and how is it affected by the presence of an electron-withdrawing group on the adjacent carbon atom?
asked
Jan 21
in
Organic Chemistry
0
votes
1
answer
35
views
According to the Young-Helmholtz theory, what happens when light of a single wavelength stimulates the retina?
asked
Jan 20
in
Psychology
Page:
1
2
next »
35.7k
questions
35.5k
answers
2
comments
7.0k
users
Categories
All categories
Science
(12.0k)
Psychology
(10.5k)
Chemistry
(13.2k)
Welcome to Sarvan Science Q&A, where you can ask questions and receive answers from other members of the community.
...