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28
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What is the effect of the size and shape of nanomaterials on their electronic and optical properties?
answered
Feb 24
in
Quantum Chemistry
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votes
40
views
What is the rate law for the reaction A + 2B → C, if the reaction is second order with respect to A and first order with respect to B?
answered
Feb 22
in
Physical Chemistry
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votes
29
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What is the bond dissociation energy of the oxygen-oxygen (O-O) bond in O2 molecule? How is this energy related to the strength of the bond between the two oxygen atoms? Provide a detailed explanation.
answered
Feb 18
in
Chemical bonding
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votes
40
views
How does the addition of different types of surfactants affect the surface tension of water?
answered
Feb 17
in
Surface Chemistry
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votes
39
views
How to optimize the production process of water-based paint by analyzing the characteristics of the raw materials?
answered
Feb 14
in
Chemical engineering
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votes
34
views
What type of inorganic solid is magnesium oxide, and how can you justify your answer?
answered
Feb 13
in
Inorganic Chemistry
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votes
72
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How can the properties of adhesives be optimized to achieve maximum bonding strength and durability while minimizing environmental impact during the production process?
answered
Feb 10
in
Chemical engineering
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votes
45
views
How can the chemical and engineering principles be integrated to design a system for the recovery of valuable metals such as gold, silver, and copper from electronic waste in the most efficient and cost-effective manner?
answered
Feb 6
in
Chemical engineering
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votes
97
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Calculate the standard enthalpy change for the fusion reaction of 50g of ice at 0°C with 450g of liquid water at 25°C. The molar enthalpy of fusion of ice is 6.01 kJ/mol and the specific heat capacity of water is 4.18 J/g·°C. Assume there are no heat losses to the surroundings.
answered
Feb 3
in
Chemical thermodynamics
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votes
118
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How does altering the pH level affect the equilibrium position of a redox reaction, and what is the relationship between the dissociation constant and pH in such a reaction? Provide an example to explain the concept.
answered
Jan 31
in
Chemical equilibrium
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votes
106
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What strategies can chemistry students use to adequately prepare for chemistry exams?
answered
Jan 30
in
Chemical education
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votes
125
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What is the composition of a given mineral sample using X-ray diffraction analysis?
answered
Jan 30
in
Analytical Chemistry
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78
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Calculate the enthalpy change (in kJ/mol) for the chemical reaction: C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l) Given the standard enthalpies of formation (ΔHf°) for C2H5OH(l) = -277.6 kJ/mol, CO2(g) = -393.5 kJ/mol, and H2O(l) = -285.8 kJ/mol.
answered
Jan 23
in
Chemical thermodynamics
0
votes
73
views
According to the social neuroscience theory, how do social factors influence brain activity and vice versa?
answered
Jan 20
in
Psychology
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votes
51
views
According to the humanistic-existential theory, why is self-actualisation important?
answered
Jan 20
in
Psychology
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votes
59
views
What is the implications of the cognitive theory on information processing?
answered
Jan 20
in
Psychology
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votes
60
views
What is the importance of self-care for counsellors?
answered
Jan 20
in
Psychology
0
votes
73
views
Who theorised social cognitive theory?
answered
Jan 17
in
Psychology
0
votes
54
views
According to B.F. Skinner's theory of operant conditioning, what is a reinforcement?
answered
Jan 16
in
Psychology
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votes
31
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When evaluating theories in existential psychology, what is the importance of considering parsimony?
answered
Jan 16
in
Psychology
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