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0
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27
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What is the predicted bond angle in the water molecule (H2O) based on its molecular geometry?
answered
5 days
ago
in
Chemical bonding
0
votes
29
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
5 days
ago
in
BioChemistry
0
votes
32
views
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
10
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
38
views
How can the electrical conductivity of graphene be improved for its use in electronic devices?
answered
Feb 7
in
Materials Chemistry
0
votes
30
views
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
votes
51
views
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
75
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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
11
views
According to Erik Erikson's psychosocial theory, what are the stages of development?
answered
Jan 20
in
Psychology
0
votes
27
views
When can mental health interventions be useful?
answered
Jan 20
in
Psychology
0
votes
24
views
Why is social role theory significant?
answered
Jan 16
in
Psychology
0
votes
36
views
What is a criticism of the feminist perspective?
answered
Jan 16
in
Psychology
0
votes
22
views
What is the cognitive-mediational theory of emotion?
answered
Jan 15
in
Psychology
0
votes
39
views
What is the weakness of falsifiability?
answered
Jan 15
in
Psychology
0
votes
31
views
What is the function of the central nervous system?
answered
Jan 14
in
Psychology
0
votes
40
views
What is the difference between distress and eustress?
answered
Jan 14
in
Psychology
0
votes
41
views
Where does electric power originate?
answered
Jan 8
in
Science
0
votes
14
views
What signals the secretion of gastric acid?
answered
Jan 7
in
Science
0
votes
31
views
The needle of a compass is made of what element?
answered
Jan 2
in
Science
0
votes
61
views
The energy for an ecosystem can come from sunlight or _________?
answered
Jan 2
in
Science
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