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 LaunaBeyers
Wall
Recent activity
All questions
All answers
Ask a Question
Questions by LaunaBeyers
0
votes
0
answers
13
views
How does the size and shape of nanoparticles affect their photochemical properties?
asked
23 hours
ago
in
PhotoChemistry
0
votes
1
answer
28
views
How does the electrokinetic potential affect the stability of colloidal systems and what is the mechanism behind it?
asked
5 days
ago
in
Surface Chemistry
0
votes
1
answer
19
views
How does the cooling rate affect the crystalline morphology of a polymer and what is the relationship between the crystalline morphology and the mechanical properties of the polymer?
asked
6 days
ago
in
Polymer Chemistry
0
votes
1
answer
24
views
What is the bond length between two oxygen atoms that are connected by a double bond in a molecule of carbon dioxide? The electronegativity of oxygen is 3.44 and carbon dioxide has a linear geometry with an O=C=O bond angle of 180 degrees.
asked
Feb 18
in
Chemical bonding
0
votes
1
answer
17
views
What is the bond dissociation energy of the H-O bond in water (H2O)? Show your calculation steps and include any necessary assumptions or data.
asked
Feb 18
in
Chemical bonding
0
votes
1
answer
27
views
What is the mechanism of phosphorescence in organic molecules, and how are the photochemical properties of these materials affected by changes in their molecular structure or environment?
asked
Feb 14
in
PhotoChemistry
0
votes
1
answer
41
views
How can the effect of reaction rate on reaction safety be investigated for a specific chemical reaction?
asked
Feb 7
in
Chemical kinetics
0
votes
1
answer
24
views
How can a process be developed for the large-scale production of hydrogen peroxide with the desired concentration and purity for use in medical and industrial applications?
asked
Feb 4
in
Chemical engineering
0
votes
1
answer
40
views
How does changing the concentration of reactants affect the rate of a chemical reaction and the resulting yield of products?
asked
Feb 3
in
Chemical kinetics
0
votes
1
answer
71
views
How can X-ray fluorescence spectroscopy be used to identify the presence of specific elements in a sample and how does the intensity of the emitted X-rays vary with the concentration of those elements?
asked
Jan 30
in
Analytical Chemistry
0
votes
1
answer
53
views
How can the amount of copper ions in a water sample be quantified using polarography technique?
asked
Jan 29
in
Analytical Chemistry
0
votes
1
answer
62
views
Calculate the Gibbs free energy change for the electrochemical reaction in which 2 moles of electrons are transferred from a zinc electrode to a copper electrode. The standard reduction potentials are E°(Cu²⁺/Cu) = 0.34 V and E°(Zn²⁺/Zn) = -0.76 V. What is the spontaneity of the reaction under standard conditions?
asked
Jan 23
in
ElectroChemistry
0
votes
1
answer
56
views
Calculate the change in enthalpy and entropy for the reaction Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) at 25°C given the following data:- ΔH°f for MgCl2(aq) = -641.3 kJ/mol- ΔS°f for MgCl2(aq) = -200.9 J/K/mol- ΔH°f for H2(g) = 0 kJ/mol- ΔS°f for H2(g) = 130.7 J/K/mol- ΔH°f for HCl(aq) = -167 kJ/mol- ΔS°f for HCl(aq) = -18.8 J/K/mol- ΔH°f for Mg(s) = 0 kJ/mol- ΔS°f for Mg(s) = 32.7 J/K/molAssume that ΔH°f and ΔS°f are independent of temperature.
asked
Jan 23
in
Inorganic Chemistry
0
votes
1
answer
62
views
When was the Millon Clinical Multiaxial Inventory MCMI first published?
asked
Jan 20
in
Psychology
0
votes
1
answer
28
views
What are some of the common behaviours associated with borderline personality disorder?
asked
Jan 20
in
Psychology
0
votes
1
answer
38
views
Where does the self-efficacy theory place emphasis?
asked
Jan 20
in
Psychology
0
votes
1
answer
10
views
What is the significance of the use of humour in counselling?
asked
Jan 17
in
Psychology
0
votes
1
answer
28
views
Please list and explain the two types of error in statistical testing in theory evaluation
asked
Jan 16
in
Psychology
0
votes
1
answer
51
views
What are the limitations of a quantitative research approach?
asked
Jan 16
in
Psychology
0
votes
1
answer
49
views
How can Erikson's stages of psychosocial development be evaluated?
asked
Jan 16
in
Psychology
Page:
1
2
3
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.
...