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Answers by CarrieMadiso
0
votes
16
views
How does the size and shape of gold nanoparticles affect their optical properties?
answered
1 day
ago
in
Physical Chemistry
0
votes
23
views
What is the effect of pH on the zeta potential of colloidal particles, and how can this be measured using electrophoretic light scattering (ELS)?
answered
4 days
ago
in
Surface Chemistry
0
votes
28
views
What is the hybridization of carbon atoms in ethene (C2H4)?
answered
5 days
ago
in
Chemical bonding
0
votes
18
views
What is the critical micelle concentration of sodium dodecyl sulfate in an aqueous solution at a temperature of 25°C?
answered
6 days
ago
in
Surface Chemistry
0
votes
33
views
How does the chemical reaction between baking soda and vinegar relate to real-world scenarios, such as cleaning solutions or volcanic eruptions? Provide specific examples and explain the science behind the reactions.
answered
Feb 18
in
Chemical education
0
votes
24
views
Identify the resonance structures of the carbonate ion (CO3^2-) and determine the formal charge on each atom in each resonance structure.
answered
Feb 18
in
Chemical bonding
0
votes
35
views
What is the photostability of a particular dye or pigment under different light sources and environmental conditions, and how does it affect its application and longevity in various industries, such as textiles, printing, and cosmetics?
answered
Feb 14
in
PhotoChemistry
0
votes
53
views
What is the concentration of potassium ions in a 0.1 M solution of potassium chloride using a potassium ion-selective electrode?
answered
Feb 13
in
Analytical Chemistry
0
votes
38
views
How can the surface chemistry of food and beverage processing be manipulated for better product quality and longer shelf life?
answered
Feb 11
in
Surface Chemistry
0
votes
49
views
Here's a precise problem for the student to solve:A galvanic cell is constructed with a zinc electrode and a copper electrode in two separate solutions, connected by a salt bridge. The zinc electrode has a surface area of 4 cm² and the copper electrode has a surface area of 8 cm². The concentration of zinc ion solution is 0.1 M and the copper ion solution is 0.01 M. The temperature of the solutions is 25°C. Calculate the resistance of the electrochemical cell.
answered
Feb 4
in
ElectroChemistry
0
votes
42
views
Develop a process for the synthesis and purification of aspirin from salicylic acid, highlighting the key reaction steps and techniques used to obtain a high purity product.
answered
Feb 4
in
Chemical engineering
0
votes
45
views
Describe the steps involved in the preparation of 2,4-dichlorobenzoic acid from benzoic acid and chlorine gas, including the chemical reactions that occur during the process, the reagents required, the conditions required for each step, and the yields of each intermediate and final product.
answered
Feb 3
in
Chemical synthesis
0
votes
41
views
Calculate the standard enthalpy change for the formation of carbon dioxide (CO2) from its elements carbon (C) and oxygen (O2) given the following information:- The standard enthalpy change for the combustion of carbon to form carbon dioxide is -394 kJ/mol.- The standard enthalpy change for the combustion of hydrogen gas (H2) to form water (H2O) is -286 kJ/mol.- The standard enthalpy change for the reaction of oxygen gas (O2) with hydrogen gas (H2) to form water (H2O) is -572 kJ/mol.Note: All values are at standard temperature and pressure (298 K and 1 atm).
answered
Feb 3
in
Chemical thermodynamics
0
votes
47
views
How does changing the temperature affect the equilibrium constant (Kc) and the formation of Fe(SCN)2+ complex ion from Fe3+ and SCN- ions?
answered
Feb 3
in
Chemical equilibrium
0
votes
76
views
What is the effect of changing the chemical composition of a polymer-based membrane on its water treatment efficiency?
answered
Jan 31
in
Polymer Chemistry
0
votes
57
views
Calculate the heat of hydration for the reaction where 1 mole of anhydrous copper(II) sulfate reacts with water to form 5 moles of hydrated copper(II) sulfate, given that the enthalpy change for the reaction is -92.2 kJ/mol.
answered
Jan 23
in
ThermoChemistry
0
votes
30
views
Why was the term 'they/them' adopted in genderqueer and non-binary communities?
answered
Jan 20
in
Psychology
0
votes
37
views
How does social learning theory apply to persuasion?
answered
Jan 20
in
Psychology
0
votes
33
views
What is the criticism of the application of cognitive distortion in animal psychology?
answered
Jan 16
in
Psychology
0
votes
50
views
According to sociobiology, what is the purpose of animal behaviour?
answered
Jan 16
in
Psychology
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