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What is the overpotential required to generate a current of 0.5 A in a galvanic cell where the standard potential is 1.4 V and the actual potential is 1.6 V? Show the calculations and explain why the overpotential is necessary for the reaction to proceed.
asked
Feb 22
in
ElectroChemistry
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votes
1
answer
28
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What is the lowest energy transition of a molecule with a HOMO-LUMO gap of 3 eV and what is the corresponding wavelength of this transition?
asked
Feb 20
in
Quantum Chemistry
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1
answer
30
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How does the coordination chemistry of metalloenzymes and metalloproteins affect their enzymatic activity and specificity?
asked
Feb 19
in
Coordination Chemistry
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1
answer
37
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How does the composition of the lipid bilayer's fatty acid tails affect the fluidity of a cellular membrane?
asked
Feb 18
in
BioChemistry
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1
answer
37
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How can we design an efficient and economic system for the recovery of valuable metals (such as gold, silver, and copper) from electronic waste, keeping in mind the preservation of the environment?
asked
Feb 12
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Chemical engineering
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1
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36
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How can the electrical conductivity of conductive polymers be improved for use in flexible electronics?
asked
Feb 7
in
Materials Chemistry
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1
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36
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How can medicinal chemists design drugs to specifically target the lifecycle of the Zika virus while minimizing the risk of harming healthy cells?
asked
Feb 5
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Medicinal Chemistry
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1
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71
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Determine the maximum monolayer coverage of nitrogen gas on a silver surface in Langmuir units if the partial pressure of nitrogen gas is 2.5 atm at 298 K. The area per molecule of nitrogen adsorbed on the silver surface is known to be 1.55×10^-19 m^2 according to experimental data.
asked
Feb 4
in
Surface Chemistry
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1
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65
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Calculate the power output of a galvanic cell having a standard potential of +0.76V and a current of 0.5A flowing through it. The cell consists of a zinc electrode and a copper electrode connected by a salt bridge and the concentration of the electrolyte is 1.0M. Given that the Faraday constant is 96487 C/mol and the temperature is 298K.
asked
Feb 3
in
ElectroChemistry
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1
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107
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How can a chemistry student effectively learn and conduct experiments when access to laboratory equipment and facilities is limited or restricted due to factors such as cost, distance, or availability?
asked
Jan 30
in
Chemical education
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votes
1
answer
63
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Calculate the heat of mixing when 50.0 mL of 1.00 M HCl is added to 50.0 mL of 1.00 M NaOH at 25°C. The heat capacity of the solution is 4.18 J/(g·°C) and the density of the final solution is 1.00 g/mL. Assume that the heat change is equal to the enthalpy change.
asked
Jan 23
in
ThermoChemistry
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1
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74
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Calculate the enthalpy of vaporization for water if 50.0 g of water is completely vaporized at its boiling point (100°C) using 107 kJ/mol as the heat of vaporization of water.
asked
Jan 23
in
ThermoChemistry
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1
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96
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Calculate the bond order and bond length of the nitrogen-oxygen bond in the molecule NO.
asked
Jan 23
in
Inorganic Chemistry
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1
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80
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According to the classical test theory, what is true score?
asked
Jan 20
in
Psychology
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1
answer
73
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Who proposed the realistic group conflict theory?
asked
Jan 20
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Psychology
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votes
1
answer
77
views
Where is the parvocellular pathway located in the brain?
asked
Jan 20
in
Psychology
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1
answer
48
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According to the humanistic approach, what motivates behaviour?
asked
Jan 20
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Psychology
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1
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87
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What is factor analysis?
asked
Jan 17
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Psychology
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1
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37
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When assessing the effectiveness of CPT, what are some of the criticisms to consider?
asked
Jan 17
in
Psychology
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1
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52
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According to the cognitive-behavioural theory, what is systematic desensitisation?
asked
Jan 17
in
Psychology
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