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How does the release of chlorofluorocarbons (CFCs) contribute to the depletion of the ozone layer and what are the potential consequences of increased UV radiation exposure on the ecosystem and human health?
answered
Feb 24
in
Environmental Chemistry
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37
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What is the mechanism behind the corrosion of iron and how does passivation effect its corrosion rate?
answered
Feb 19
in
Surface Chemistry
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40
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How can we predict the magnetic properties of molecular magnets through quantum chemistry calculations and what factors influence the magnetic behavior of these molecules?
answered
Feb 14
in
Quantum Chemistry
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35
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What is the role of chaperones in protein folding, and how do they assist in the correct folding of proteins?
answered
Feb 12
in
BioChemistry
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99
views
How can the synthesis and characterization of new materials be optimized to effectively remove heavy metal ions from contaminated water sources?
answered
Feb 11
in
Materials Chemistry
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107
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What is the percentage of nitrogen, carbon, and hydrogen in a sample of caffeine obtained from coffee beans? Use elemental analysis to determine the composition of the sample.
answered
Jan 31
in
Analytical Chemistry
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86
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What is the concentration of a hydrochloric acid solution if 25 ml of the solution requires 18 ml of a 0.1 M sodium hydroxide solution for complete neutralization during a titration?
answered
Jan 30
in
Analytical Chemistry
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89
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Calculate the enthalpy change of the following reaction: 2C(s) + 2H2(g) + 5O2(g) -> 2CO2(g) + 2H2O(l) Given the enthalpies of formation of CO2(g), H2O(l), and H2(g) are -393.5 kJ/mol, -285.8 kJ/mol, and -241.8 kJ/mol, respectively.
answered
Jan 23
in
ThermoChemistry
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76
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Calculate the enthalpy change for the ionization of magnesium using the following information: - The first ionization energy of magnesium is 738 kJ/mol. - The second ionization energy of magnesium is 1450 kJ/mol.
answered
Jan 23
in
ThermoChemistry
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124
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Calculate the enthalpy change for the dissolution of 5.00 g of potassium chloride (KCl) in 100 mL of water. Given that the specific heat capacity of the resulting solution is 4.18 J/g°C, and its temperature increases from 25.0°C to 30.0°C. The molar mass of KCl is 74.55 g/mol, and the enthalpy of hydration of K+ and Cl- ions is -716 and -364 kJ/mol, respectively.
answered
Jan 23
in
ThermoChemistry
0
votes
76
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When was the study on the effects of self-compassion on anxiety conducted?
answered
Jan 20
in
Psychology
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votes
94
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According to the theory of sampling, what is stratified sampling?
answered
Jan 20
in
Psychology
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61
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What is the role of psychology in artificial intelligence?
answered
Jan 20
in
Psychology
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votes
72
views
Who developed the concept of mindfulness?
answered
Jan 20
in
Psychology
0
votes
123
views
How might early intervention programs help children with developmental delays?
answered
Jan 17
in
Psychology
0
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84
views
What is the role of context in discursive psychology?
answered
Jan 17
in
Psychology
0
votes
48
views
What is a t-test?
answered
Jan 17
in
Psychology
0
votes
93
views
What is an example of dissonance reduction?
answered
Jan 16
in
Psychology
0
votes
63
views
When evaluating a cognitive behavioural theory, what is meant by face validity?
answered
Jan 15
in
Psychology
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42
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What is the role of emotions in behaviour psychology?
answered
Jan 14
in
Psychology
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