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What is the equilibrium constant expression for the ionization of acetic acid, CH3COOH, in water and calculate the equilibrium constant (Ka) at 25°C if the pH of a 0.1 M acetic acid solution is 4.90?
asked
Feb 20
in
Chemical equilibrium
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votes
1
answer
37
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How do the electronic and optical properties of perovskite materials change with different dopants and dopant concentrations?
asked
Feb 20
in
Quantum Chemistry
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1
answer
35
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How does the concentration of reactants affect the rate of an inorganic reaction, and can this relationship be quantified using experimental data?
asked
Feb 19
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Inorganic Chemistry
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1
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24
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What is the balanced chemical equation for the preparation of 2,4-dichlorobenzoic acid via the reaction between benzoic acid and chlorine gas under specific reaction conditions?
asked
Feb 17
in
Chemical synthesis
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1
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48
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How does the incorporation of functional groups affect the binding strength of host-guest complexes in supramolecular chemistry, as predicted by computational studies?
asked
Feb 13
in
Computational Chemistry
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1
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35
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What is the difference between E1 and E2 mechanisms in elimination reactions? Provide an example of each mechanism and discuss the factors that influence the rate of each reaction.
asked
Feb 13
in
Organic Chemistry
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1
answer
39
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How can the molecular weight and physical properties of polyethylene be controlled during the synthesis process from ethylene monomer?
asked
Feb 10
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Chemical synthesis
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1
answer
30
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How can molecular docking studies aid in developing new drugs to target COVID-19 protease enzyme?
asked
Feb 6
in
Computational Chemistry
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1
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34
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How can knowledge of chemistry principles be applied to real-world scenarios such as the production and use of common household items such as laundry detergent or shampoo? What are some of the key chemical processes involved in their creation and use?
asked
Feb 6
in
Chemical education
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1
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34
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How can chemistry students with limited access to laboratory equipment and facilities still conduct meaningful experiments to supplement their learning?
asked
Feb 5
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Chemical education
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41
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Calculate the lattice energy of NaF given the following information: the enthalpy of formation of NaF is -572.6 kJ/mol, the ionization energy of Na is 495.8 kJ/mol, the electron affinity of F is -328 kJ/mol, and the Madelung constant for NaF is 1.747.
asked
Jan 23
in
Inorganic Chemistry
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1
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58
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Calculate the formal charge of nitrogen in the molecule NO3-.
asked
Jan 23
in
Chemical bonding
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1
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74
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A chemistry student needs to determine the percent by mass of magnesium (Mg) in a sample of limestone. The student has access to 5 grams of the sample and is provided with the following information: the sample is comprised of calcium carbonate (CaCO3) and magnesium carbonate (MgCO3); the atomic masses of the elements are: Ca = 40.08 g/mol, C = 12.01 g/mol, O = 16.00 g/mol, and Mg = 24.31 g/mol; and the sample contains a total of 3.06 grams of carbon (C). Calculate the percentage by mass of magnesium in the limestone sample using mass balance calculations.
asked
Jan 22
in
Analytical Chemistry
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1
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34
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Who was the psychologist that proposed the frequency theory of pitch perception?
asked
Jan 20
in
Psychology
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1
answer
23
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How might parent-child interactions influence attachment styles?
asked
Jan 17
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Psychology
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1
answer
44
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When treating anxiety disorders, what is exposure therapy?
asked
Jan 17
in
Psychology
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1
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52
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Where might a humanistic psychologist look for the cause of self-esteem issues?
asked
Jan 17
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Psychology
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1
answer
41
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According to acculturation theory, what is acculturation?
asked
Jan 16
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Psychology
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1
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34
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According to Ellis, what is the goal of cognitive-behavioural therapy?
asked
Jan 15
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Psychology
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1
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35
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What is nociceptive pain?
asked
Jan 15
in
Psychology
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