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Questions by AdaFennescey
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1
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28
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What are the effects of solvent viscosity on the folding/unfolding dynamics of a particular protein using molecular dynamics simulations?
asked
Feb 20
in
Computational Chemistry
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votes
1
answer
29
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What is the critical micelle concentration (CMC) of sodium dodecyl sulfate (SDS) in a 0.1 M NaCl solution, and how does it vary with temperature?
asked
Feb 19
in
Surface Chemistry
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votes
1
answer
23
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How does the concentration of pollutants and the specific surface area of activated carbon affect the adsorption efficiency of pollutants on activated carbon?
asked
Feb 17
in
Surface Chemistry
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votes
1
answer
65
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How does increasing the intensity of light affect the rate of photochemical reactions involving a specific molecule?
asked
Feb 13
in
PhotoChemistry
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votes
1
answer
16
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How does cholesterol affect the fluidity of the cell membrane? Provide a detailed explanation with examples.
asked
Feb 12
in
BioChemistry
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1
answer
72
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Design a heat exchanger for a specific process in which a 50,000 kg/day of a mixture with a specific heat capacity of 3.5 kJ/kg.K needs to be heated from 20°C to 70°C using a hot stream of 100,000 kg/day of a fluid with a temperature of 150°C. The heat exchanger needs to operate with a heat transfer coefficient of at least 400 W/m2.K and the pressure drop across the heat exchanger should be no more than 0.5 bar. What type of heat exchanger would be most suitable and what are the dimensions required to achieve the desired performance?
asked
Feb 4
in
Chemical engineering
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1
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40
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Consider the following reactions:1. Mg(s) + 2HCl(aq) → MgCl₂(aq) + H₂(g) ΔH₁ = -454.9 kJ/mol2. MgO(s) + 2HCl(aq) → MgCl₂(aq) + H₂O(l) ΔH₂ = -131.3 kJ/mol3. H₂(g) + ½O₂(g) → H₂O(l) ΔH₃ = -285.8 kJ/molUsing Hess's Law, calculate the enthalpy change for the following reaction:MgO(s) + 2HCl(aq) → MgCl₂(aq) + H₂(g) given that the enthalpy change for the reaction Mg(s) + ½O₂(g) → MgO(s) is ΔH = -601.6 kJ/mol.
asked
Feb 3
in
ThermoChemistry
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votes
1
answer
71
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Calculate the standard enthalpy change for the vaporization reaction of 25.0 g of water at 100°C and atmospheric pressure (1 atm).
asked
Feb 3
in
Chemical thermodynamics
0
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1
answer
108
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Identify the major functional groups present in the biomolecule adenosine triphosphate (ATP) and explain their role in the biochemical reactions.
asked
Jan 30
in
Organic Chemistry
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1
answer
105
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What is the effect of adding a small amount of nickel to a titanium alloy on the strength and corrosion resistance of the alloy, and how does this influence its suitability for aerospace applications?
asked
Jan 30
in
Materials Chemistry
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1
answer
32
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How can the chemical engineer design a safe and cost-effective system for the production of cosmetics such as lotions and creams which align with regulatory standards and offer desirable shelf-life?
asked
Jan 30
in
Chemical engineering
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1
answer
78
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Calculate the enthalpy of polymerization of ethylene from the following data: Ethylene, C2H4(g) polymerizes to form polyethylene, (C2H4)n(s) with ΔHrxn = -44.0 kJ/mol at 298 K. Additionally, it is known that the standard enthalpies of formation of C2H4(g) and polyethylene (C2H4)n(s) are 52.3 kJ/mol and -128.2 kJ/mol, respectively. Assuming the enthalpy of polymerization is independent of temperature, calculate ΔHºp for the reaction.
asked
Jan 23
in
ThermoChemistry
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1
answer
34
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Who is responsible for the parallel-distributed processing model?
asked
Jan 15
in
Psychology
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1
answer
76
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According to the social support theory of stress, why is social support important in stress management?
asked
Jan 15
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Psychology
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1
answer
93
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How does the social learning theory explain gender role development?
asked
Jan 15
in
Psychology
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1
answer
57
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What is the role of the myelin sheath in neurons?
asked
Jan 14
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Psychology
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1
answer
66
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What is the role of serotonin in the treatment of OCD?
asked
Jan 14
in
Psychology
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1
answer
74
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What is the role of dreams in psychoanalysis?
asked
Jan 13
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Psychology
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1
answer
88
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What is the term for geological activity that occurs within a plate?
asked
Jan 7
in
Science
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1
answer
116
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What element, which often forms polymers, has a unique ability to form covalent bonds with many other atoms?
asked
Jan 6
in
Science
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