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0
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16
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What are the products of the reaction between calcium chloride and sodium carbonate?
answered
3 days
ago
in
Inorganic Chemistry
0
votes
17
views
What is the mechanism and product of the substitution reaction between 2-bromo-2-methylpropane and sodium hydroxide in ethanol?
answered
3 days
ago
in
Organic Chemistry
0
votes
33
views
Identify the heterocyclic compound among the following molecules and explain its structure and properties:a) Pyridine (C5H5N)b) Benzene (C6H6)c) Ethanol (C2H6O)d) Cyclohexane (C6H12)
answered
5 days
ago
in
Organic Chemistry
0
votes
21
views
What are the factors affecting the efficiency of photosensitizers in photochemical reactions?
answered
5 days
ago
in
PhotoChemistry
0
votes
32
views
How do surface properties affect the adhesion of polymers to different substrates, and how can this be optimized for specific applications?
answered
Feb 17
in
Polymer Chemistry
0
votes
33
views
How does the interaction between a catalyst and a reactant in a heterogeneous catalytic reaction occur, and what specific mechanisms are involved in this process?
answered
Feb 13
in
Surface Chemistry
0
votes
10
views
How can we design a drug that specifically targets the bacteria responsible for urinary tract infections without harming the good bacteria in the gut?
answered
Feb 12
in
Medicinal Chemistry
0
votes
43
views
What is the current density in an electrochemical cell with a copper electrode and a zinc electrode if the current produced by the cell is 0.5 A and the surface area of the copper electrode is 10 cm² while the surface area of the zinc electrode is 5 cm²?
answered
Feb 12
in
ElectroChemistry
0
votes
40
views
How can the electronic band structure of perovskite materials be calculated using first-principles calculations, and how does the band structure affect the material's optical properties such as its absorption and emission spectra?
answered
Feb 7
in
Quantum Chemistry
0
votes
39
views
How can the concentration of Persistent organic pollutants (POPs) in water bodies be effectively measured and reduced to mitigate their impact on aquatic organisms and the overall ecosystem?
answered
Feb 6
in
Environmental Chemistry
0
votes
30
views
How can polymer-based sensors be used to detect and measure the concentration of a specific gas or chemical in the environment?
answered
Feb 5
in
Polymer Chemistry
0
votes
36
views
How can chemistry educators better support students with learning disabilities in understanding the abstract concepts and complex equations involved in stoichiometry?
answered
Feb 4
in
Chemical education
0
votes
58
views
Here's an example problem for the student to solve:When 0.10 moles of a weak acid HA are dissolved in 1.00 L of water, the pH of the resulting solution is measured to be 4.20. Calculate the equilibrium constant (Ka) for the dissociation of HA if the acid is known to be 10% ionized.
answered
Feb 4
in
Chemical equilibrium
0
votes
39
views
Calculate the standard enthalpy change (ΔH°) and standard entropy change (ΔS°) for the decomposition reaction of calcium carbonate (CaCO3) at 298 K:CaCO3(s) → CaO(s) + CO2(g)
answered
Feb 3
in
Inorganic Chemistry
0
votes
75
views
What is the amount of copper present in a 0.2500 g sample of a copper salt, if it requires 12500 C of electricity to completely deposit it during coulometric titration?
answered
Jan 30
in
Analytical Chemistry
0
votes
54
views
A student sets up an electrochemical cell with two copper electrodes and a copper(II) sulfate solution. The concentration of the copper(II) sulfate solution is 0.1 M. The student measures the potential difference between the electrodes as 0.54 V. Calculate the resistance of the cell in ohms.
answered
Jan 22
in
ElectroChemistry
0
votes
74
views
According to the social identity theory, why do individuals participate in group behaviors?
answered
Jan 17
in
Psychology
0
votes
33
views
According to the evolutionary approach, how does human behaviour affect survival and reproduction?
answered
Jan 17
in
Psychology
0
votes
17
views
Why is a two-way ANOVA used?
answered
Jan 17
in
Psychology
0
votes
12
views
What is the difference between statistical and practical significance in theory evaluation?
answered
Jan 16
in
Psychology
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