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0
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34
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What is the predicted bond angle in the water molecule (H2O) based on its molecular geometry?
answered
Feb 22
in
Chemical bonding
0
votes
32
views
What is the overall mechanism responsible for the transport of lipids in the bloodstream, and how does this mechanism allow for efficient lipid metabolism in the body?
answered
Feb 22
in
BioChemistry
0
votes
59
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What is the rate constant for a first-order reaction if the initial concentration of the reactant is 1.5 M and its concentration after 2 minutes is 0.75 M? The half-life of the reaction is 4 minutes.
answered
Feb 13
in
Chemical kinetics
0
votes
33
views
How can the magnetic properties of a molecule be calculated using quantum chemistry, and what is the significance of these calculations in understanding the behavior of materials such as paramagnetic oxides and transition metal complexes?
answered
Feb 7
in
Quantum Chemistry
0
votes
43
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How can the electrical conductivity of graphene be improved for its use in electronic devices?
answered
Feb 7
in
Materials Chemistry
0
votes
37
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How can the adhesion and cohesion properties of polymer-based adhesives and sealants be improved for use in high-temperature applications?
answered
Feb 6
in
Polymer Chemistry
0
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74
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Calculate the standard enthalpy change (∆H°) for the combustion of methane (CH4(g)) given the balanced equation: CH4(g) + 2O2(g) → CO2(g) + 2H2O(l)(Note: The values of standard enthalpies of formation of CO2(g), H2O(l) and CH4(g) are -393.5 kJ/mol, -285.8 kJ/mol, and -74.8 kJ/mol, respectively)
answered
Feb 3
in
Chemical thermodynamics
0
votes
99
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How can X-ray fluorescence spectroscopy be used to identify the presence and relative concentrations of specific elements in a sample? Provide a detailed explanation of the principles and techniques involved in this method. Additionally, discuss the limitations and potential errors that may be encountered during analysis and how these can be overcome or minimized.
answered
Jan 30
in
Analytical Chemistry
0
votes
18
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According to Erik Erikson's psychosocial theory, what are the stages of development?
answered
Jan 20
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Psychology
0
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36
views
When can mental health interventions be useful?
answered
Jan 20
in
Psychology
0
votes
37
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Why is social role theory significant?
answered
Jan 16
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Psychology
0
votes
41
views
What is a criticism of the feminist perspective?
answered
Jan 16
in
Psychology
0
votes
49
views
What is the cognitive-mediational theory of emotion?
answered
Jan 15
in
Psychology
0
votes
62
views
What is the weakness of falsifiability?
answered
Jan 15
in
Psychology
0
votes
46
views
What is the function of the central nervous system?
answered
Jan 14
in
Psychology
0
votes
57
views
What is the difference between distress and eustress?
answered
Jan 14
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Psychology
0
votes
49
views
Where does electric power originate?
answered
Jan 8
in
Science
0
votes
20
views
What signals the secretion of gastric acid?
answered
Jan 7
in
Science
0
votes
37
views
The needle of a compass is made of what element?
answered
Jan 2
in
Science
0
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130
views
The energy for an ecosystem can come from sunlight or _________?
answered
Jan 2
in
Science
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