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0
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21
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How does the molecular weight of a polymer affect its mechanical and thermal properties when used in 3D printing applications, and what specific molecular weight range is best suited for producing high-quality printed parts with optimal performance?
answered
4 days
ago
in
Materials Chemistry
0
votes
24
views
What molecular features of a drug make it effective in targeting a specific receptor or enzyme? Provide an example of a drug targeting a specific receptor or enzyme and explain its molecular interactions with the target site.
answered
5 days
ago
in
Medicinal Chemistry
0
votes
23
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What is the bond dissociation energy of the carbon-hydrogen (C-H) bond in methane (CH4)? Show all steps of the calculation and include units.
answered
Feb 18
in
Chemical bonding
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votes
28
views
How does the process of RNA transcription and translation differ between prokaryotic and eukaryotic cells, and what impact does this have on the function of proteins?
answered
Feb 14
in
BioChemistry
0
votes
34
views
What is the net energy yield in ATP molecules for each molecule of glucose metabolized in the biochemical pathways of glycolysis and gluconeogenesis?
answered
Feb 13
in
BioChemistry
0
votes
42
views
How can the process of emulsification be optimized in the design of a system for the production of cosmetics, specifically for achieving long-term stability of the final product?
answered
Feb 10
in
Chemical engineering
0
votes
43
views
Calculate the standard enthalpy change for the fusion of 25 grams of ice at -10°C to liquid water at 20°C. The specific heat capacity of ice is 2.09 J/g°C, the specific heat capacity of water is 4.18 J/g°C, and the enthalpy of fusion of water is 6.01 kJ/mol.
answered
Feb 3
in
Chemical thermodynamics
0
votes
96
views
What strategies can a chemistry student use to adequately prepare for chemistry-related careers, and how can they ensure they are gaining the necessary skills and knowledge to be successful in their chosen profession?
answered
Jan 30
in
Chemical education
0
votes
56
views
How can atomic absorption spectroscopy be used to quantitatively determine the concentration of lead (Pb) in a water sample taken from a local river? What steps must be taken to prepare the sample and calibrate the spectroscopic instrument? How can the results be verified and reported?
answered
Jan 29
in
Analytical Chemistry
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votes
14
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Calculate the enthalpy change of isomerization for the conversion of cis-but-2-ene to trans-but-2-ene, given the standard enthalpy of formation for both isomers. Asssume all other conditions remain constant.
answered
Jan 23
in
ThermoChemistry
0
votes
57
views
Calculate the bond length between two hydrogen atoms if the bond energy is 436 kJ/mol.
answered
Jan 23
in
Chemical bonding
0
votes
57
views
A student wants to know how changing the volume affects the position of the equilibrium for the reaction N2(g) + 3H2(g) ⇌ 2NH3(g). If the reaction is initially at equilibrium in a 2 L container at 400 K and then the volume is decreased to 1 L, what will be the new concentrations of each gas at equilibrium? (Assume that the pressure remains constant and that the reaction follows the ideal gas law.)
answered
Jan 22
in
Chemical equilibrium
0
votes
11
views
Why is the humanistic approach significant in understanding self-concept?
answered
Jan 20
in
Psychology
0
votes
33
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Why do psychodynamic psychologists believe that unconscious thoughts and experiences shape behaviour?
answered
Jan 20
in
Psychology
0
votes
38
views
Who developed the Prolonged Exposure therapy PE and what were its main assumptions?
answered
Jan 17
in
Psychology
0
votes
33
views
When should debriefing occur in a research study?
answered
Jan 17
in
Psychology
0
votes
31
views
What are the weaknesses of critical theory?
answered
Jan 16
in
Psychology
0
votes
65
views
What is the Sexual Excitation System?
answered
Jan 15
in
Psychology
0
votes
76
views
What is the difference between semantic memory and episodic memory?
answered
Jan 14
in
Psychology
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votes
40
views
What is the impact of animal psychology research on animal welfare?
answered
Jan 13
in
Psychology
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