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1
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What is the effect of concentration and duration of exposure of a photosensitizer on the rate of photochemical reactions?
asked
Feb 22
in
PhotoChemistry
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votes
1
answer
31
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How does the coordination of metal ion affect the catalytic activity of metalloproteins? Provide examples and explain the importance in biological systems.
asked
Feb 19
in
Coordination Chemistry
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1
answer
28
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How does the adsorption energy of a nitrogen molecule on the surface of a metal catalyst change with the addition of a small amount of a second metal dopant, as predicted by density functional theory calculations?
asked
Feb 17
in
Computational Chemistry
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1
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50
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What are the optical properties of liquid crystals and how do they affect the display properties of LCD screens?
asked
Feb 13
in
Physical Chemistry
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1
answer
53
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What is the effect of increasing the temperature on the ionization constant (Ka) of acetic acid (CH3COOH) which initially has a Ka value of 1.8 x 10^-5 M at 25°C and how does it affect the pH of its 0.1 M solution?
asked
Feb 13
in
Chemical equilibrium
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1
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72
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How can the process parameters (such as temperature, pressure, and reaction time) be optimized to improve the yield and quality of high-density polyethylene production using a slurry-based polymerization reaction?
asked
Feb 10
in
Chemical engineering
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1
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47
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Calculate the standard electrode potential for the following redox reaction: Zn(s) + Cu^2+(aq) -> Zn^2+(aq) + Cu(s) Given the standard reduction potentials for Zn^2+(aq)/Zn(s) and Cu^2+(aq)/Cu(s) are -0.76 V and +0.34 V, respectively.
asked
Feb 3
in
Chemical thermodynamics
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1
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35
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What is the calculated bandgap of a silicon crystal using Density Functional Theory (DFT) calculations, with a lattice parameter of 5.43 Å? How does the calculated bandgap compare to experimental values reported in the literature?
asked
Jan 31
in
Computational Chemistry
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votes
1
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90
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What is the bond strength of a molecule made up of two hydrogen atoms and one oxygen atom? Provide a detailed explanation of how you arrived at your answer, including the calculation of the bond energy and any factors that affect bond strength.
asked
Jan 30
in
Chemical bonding
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1
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35
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What initiatives can be taken by educational institutions to better prepare chemistry students for career opportunities in industry and research?
asked
Jan 30
in
Chemical education
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1
answer
55
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Calculate the lattice energy of sodium chloride (NaCl) using Born-Haber cycle and Hess's law. Given the following data:- Enthalpy of sublimation of sodium (Na): +108.6 kJ/mol- Enthalpy of dissociation of chlorine (Cl2): +243.0 kJ/mol- Bond energy of Na-Cl bond: -412.0 kJ/mol- Ionization energy of sodium (Na): +496.0 kJ/mol- Electron affinity of chlorine (Cl): -349.0 kJ/mol- Heat of formation of sodium chloride (NaCl): -411.0 kJ/mol.
asked
Jan 23
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Inorganic Chemistry
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1
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20
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Who is associated with social identity theory?
asked
Jan 17
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Psychology
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1
answer
62
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According to evolutionary psychology, what is natural selection?
asked
Jan 16
in
Psychology
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1
answer
54
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What is the social network perspective?
asked
Jan 15
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Psychology
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1
answer
43
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What is the role of sex education in promoting healthy sexual development?
asked
Jan 14
in
Psychology
0
votes
1
answer
76
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What is general intelligence or 'g'?
asked
Jan 13
in
Psychology
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1
answer
53
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Wich disorder arises when defective valves allow blood to accumulate within the veins?
asked
Jan 8
in
Science
0
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1
answer
59
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Where can you find humid subtropical climates?
asked
Jan 8
in
Science
0
votes
1
answer
50
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What kind of joints does the skull have that do not allow any movement?
asked
Jan 7
in
Science
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1
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94
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What do stored fats provide our body with for later use?
asked
Jan 6
in
Science
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