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What is the relationship between the concentration of reactants and the reaction rate in the reaction of hydrogen peroxide and iodide ions, and how does this affect the overall reaction efficiency?
asked
Feb 22
in
Chemical kinetics
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votes
1
answer
37
views
What are the primary sources of ozone-depleting chemicals and how do they contribute to the depletion of the ozone layer? Furthermore, what strategies can be implemented to reduce the release of these chemicals into the atmosphere?
asked
Feb 22
in
Environmental Chemistry
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votes
1
answer
29
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How does the polarity of the solvent affect the rate of a specific photochemical reaction and what is the mechanism behind it?
asked
Feb 22
in
PhotoChemistry
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votes
1
answer
28
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How does the fluid-mosaic model explain the structure and function of the cell membrane?
asked
Feb 20
in
BioChemistry
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votes
1
answer
34
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What is the new equilibrium constant for the reaction N2(g) + 3H2(g) ⇌ 2NH3(g) if the initial concentration of NH3 is 0.1 M, N2 is 0.2 M, H2 is 0.3 M, and then more H2 is added until its concentration reaches 0.5 M?
asked
Feb 20
in
Chemical equilibrium
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1
answer
32
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How does the concentration of the emulsifying agent affect the stability of an oil-in-water emulsion?
asked
Feb 19
in
Surface Chemistry
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votes
1
answer
45
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How does the chemical structure of a drug affect its toxicity, and how can medicinal chemists modify these structures to reduce toxicity while maintaining therapeutic activity?
asked
Feb 18
in
Medicinal Chemistry
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votes
1
answer
27
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What is the boiling point of MgCl2 (magnesium chloride) at 1 atm?
asked
Feb 17
in
Inorganic Chemistry
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votes
1
answer
29
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What is the reaction mechanism for the acid-catalyzed cleavage of an ether? Provide the step-by-step process and the structures of the intermediate compounds involved in the reaction.
asked
Feb 17
in
Organic Chemistry
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votes
1
answer
37
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How do the spectroscopic techniques like UV-Vis, IR, and NMR help in characterizing coordination compounds and determining their electronic and geometric structure?
asked
Feb 14
in
Coordination Chemistry
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votes
1
answer
35
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What is the crystal structure of sodium chloride (NaCl) and how does it form?
asked
Feb 14
in
Physical Chemistry
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votes
1
answer
39
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How can chemistry teachers make the subject more interesting and engaging for students who lack interest in the subject?
asked
Feb 5
in
Chemical education
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votes
1
answer
61
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Design a process for the purification of crude caffeine extracted from coffee beans, using available techniques and equipment at your disposal, while ensuring high purity and minimum loss of product.
asked
Feb 4
in
Chemical engineering
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1
answer
84
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Calculate the standard enthalpy change for the sublimation of 5 moles of solid iodine (I2) given the following data:- Enthalpy of fusion of iodine = 15.52 kJ/mol- Enthalpy of vaporization of iodine = 41.57 kJ/mol
asked
Feb 3
in
Chemical thermodynamics
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votes
1
answer
76
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Calculate the enthalpy change (in kJ/mol) for the polymerization of ethylene to polyethylene, given that the polymerization of 1 mole of ethylene produces 3 moles of polyethylene and the enthalpy change of the reaction is -32 kJ/mol.
asked
Jan 23
in
ThermoChemistry
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1
answer
85
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A student needs to determine the amount of copper present in a sample of brass using coulometry. If the sample is dissolved in acid and subjected to coulometric analysis using a standard silver electrode, what is the concentration of copper (in ppm) in the brass sample?
asked
Jan 22
in
Analytical Chemistry
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1
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91
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A chemistry student is trying to determine the boiling point of a solution containing 30 grams of glucose (C6H12O6) dissolved in 100 grams of water. Given that the boiling point of pure water is 100°C and the elevation constant for water is 0.512°C/m, what is the boiling point of the solution?
asked
Jan 22
in
Physical Chemistry
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144
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How many moles of sulfuric acid (H2SO4) are required to react completely with 5 moles of magnesium hydroxide (Mg(OH)2) to produce magnesium sulfate (MgSO4) and water (H2O)?
asked
Jan 21
in
Inorganic Chemistry
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1
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103
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Where does the term 'existential' come from?
asked
Jan 20
in
Psychology
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votes
1
answer
79
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Where does the idea of 'existential anxiety' come from?
asked
Jan 20
in
Psychology
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