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Answers by MervinBowden
0
votes
80
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What is the effect of varying the composition of metal alloys on their mechanical properties, such as strength, ductility, and corrosion resistance, and how does this relate to the performance of the alloys in aerospace applications?
answered
Feb 18
in
Materials Chemistry
0
votes
83
views
How does the addition of specific biomolecules affect the mechanical properties of a biomaterial and how can this information be used to design scaffolds for tissue engineering applications?
answered
Feb 17
in
Materials Chemistry
0
votes
90
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How can we optimize the synthesis and characterization process of new materials for use in fuel cells to improve their efficiency and prolong their lifespan?
answered
Feb 14
in
Materials Chemistry
0
votes
97
views
How can the photochemical properties of supramolecular assemblies be manipulated and controlled for targeted applications in fields such as solar energy conversion and drug delivery?
answered
Feb 10
in
PhotoChemistry
0
votes
92
views
How can the photochemical properties of phosphorescent materials be modified to enhance their efficiency as photovoltaic materials in solar cells?
answered
Feb 10
in
PhotoChemistry
0
votes
82
views
How can the chemistry curriculum be modified to better support students with learning disabilities in understanding and applying fundamental concepts such as stoichiometry and balancing chemical equations?
answered
Feb 6
in
Chemical education
0
votes
155
views
How can a chemist selectively protect an amine group in the presence of hydroxyl and carboxyl groups when synthesizing a complex organic molecule using protecting groups?
answered
Feb 4
in
Organic Chemistry
0
votes
131
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Calculate the standard Gibbs free energy change for the electrochemical cell reaction using the given half-reactions:Cu^2+(aq) + 2 e^- → Cu(s) E° = +0.34 VSn^4+(aq) + 2 e^- → Sn^2+(aq) E° = +0.15 VConstruct the cell diagram and identify the anode and cathode. Determine the overall cell potential and whether the reaction is spontaneous.
answered
Feb 3
in
ElectroChemistry
0
votes
98
views
Calculate the enthalpy of combustion of methane if 2.56 g of methane was burnt completely in a bomb calorimeter containing excess oxygen, causing a temperature rise of 4.58 °C in the calorimeter, which has a heat capacity of 1.26 kJ/°C. The balanced chemical equation for the combustion of methane is as follows: CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) + energy.
answered
Jan 23
in
ThermoChemistry
0
votes
101
views
Calculate the enthalpy of adsorption for the adsorption of 2.5 moles of nitrogen gas at 298 K on the surface area of 1 gram of activated charcoal, given that the partial pressure of nitrogen gas is 0.1 atm. The heat of vaporization of nitrogen is 5.6 kJ/mol. Express your answer in kJ/mol.
answered
Jan 23
in
ThermoChemistry
0
votes
84
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Calculate the enthalpy change for the dissolution of 10 grams of sodium hydroxide in excess water, given that the solution formed has a final temperature of 25°C, and the specific heat capacity of the solution is 4.184 J/(g°C). The molar enthalpy of dissolution of NaOH is -44 kJ/mol. Assume that the density of the solution is equal to that of water.
answered
Jan 23
in
ThermoChemistry
0
votes
140
views
When does ingroup bias occur?
answered
Jan 20
in
Psychology
0
votes
92
views
What is the cognitive-affective personality system?
answered
Jan 20
in
Psychology
0
votes
67
views
How might social identity theory be relevant to end-of-life care?
answered
Jan 20
in
Psychology
0
votes
46
views
What is Shepard and Metzler's study on mental rotation?
answered
Jan 20
in
Psychology
0
votes
55
views
Please compare and contrast the ethics of longitudinal and cross-sectional research designs.
answered
Jan 20
in
Psychology
0
votes
57
views
Who developed the Prolonged Exposure therapy PE and what were its main assumptions?
answered
Jan 17
in
Psychology
0
votes
59
views
What is the difference between crystallized and fluid intelligence?
answered
Jan 17
in
Psychology
0
votes
54
views
What is the difference between a fixed mindset and a growth mindset?
answered
Jan 17
in
Psychology
0
votes
92
views
Where does pragmatism argue that research should be done?
answered
Jan 16
in
Psychology
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