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What is the reaction quotient (Q) for the following chemical reaction at 25°C, if the initial concentrations of A, B, and C are 0.2 M, 1.0 M, and 0.5 M, respectively?2A + 3B ↔ 4C
asked
3 days
ago
in
Chemical thermodynamics
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votes
1
answer
20
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How do the properties of the dispersed phase and continuous phase of a colloid affect its stability and coagulation, and what mechanisms can be used to control these processes?
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3 days
ago
in
Surface Chemistry
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votes
1
answer
20
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What is the optimal reaction condition, i.e. temperature, pressure, and catalyst type, for synthesizing polyethylene terephthalate from terephthalic acid and ethylene glycol to achieve the highest yield and quality of the product?
asked
3 days
ago
in
Chemical synthesis
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votes
1
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24
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How does the lack of internship opportunities impact the preparedness of chemistry students for chemistry-related careers?
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5 days
ago
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Chemical education
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1
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20
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How does the coordination chemistry of metalloenzymes and metalloproteins affect the enzymatic activity of an enzyme?
asked
6 days
ago
in
Coordination Chemistry
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1
answer
33
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What is the difference in the coordination chemistry of metalloporphyrins and metallophthalocyanines, and how does this difference affect the electronic properties and reactivity of these compounds?
asked
Feb 13
in
Coordination Chemistry
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votes
1
answer
38
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What is the effect of increasing the pH of a solution containing a weak acid and its conjugate base on the equilibrium position of the acid-base reaction? Provide explanations and calculations to support your answer.
asked
Feb 13
in
Chemical equilibrium
0
votes
1
answer
28
views
What is the hybridization of nitrogen in the compound NH3?
asked
Feb 13
in
Inorganic Chemistry
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votes
1
answer
43
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What is the mechanism of Hofmann rearrangement, and how is it related to the conversion of primary amides into amines?
asked
Feb 13
in
Organic Chemistry
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votes
1
answer
50
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What are the critical steps and parameters to consider when developing a process for the production of a pharmaceutical drug using chemical engineering principles? How can we ensure the final product is safe, effective, and cost-efficient?
asked
Feb 12
in
Chemical engineering
0
votes
1
answer
38
views
How can the performance and durability of polymer-based coatings be improved to withstand harsh environmental conditions?
asked
Feb 10
in
Polymer Chemistry
0
votes
1
answer
41
views
How can spectroscopic techniques be used to determine the coordination number and geometry of a transition metal complex? Provide an example of a complex and the corresponding spectroscopic data that can be used to determine its structure.
asked
Feb 5
in
Coordination Chemistry
0
votes
1
answer
48
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Determine the standard enthalpy of formation of ethanol (C2H5OH) given the following information: 1. The combustion of 1 mole of ethanol yields 1367 kJ of heat.2. The standard enthalpy of formation for CO2(g) and H2O(l) are -393.5 kJ/mol and -285.8 kJ/mol, respectively.
asked
Feb 4
in
Chemical thermodynamics
0
votes
1
answer
78
views
What is the oxidation state of nitrogen in NH4NO3?
asked
Jan 31
in
Chemical reactions
0
votes
1
answer
64
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Calculate the enthalpy change for the dissolution of 5 grams of sodium chloride in 50 mL of water if the temperature of the solution decreases from 25 °C to 21 °C. The density of the solution is 1.0 g/mL and the specific heat capacity of the solution is 4.18 J/g°C. (Assume the heat exchange between the solution and the surroundings is negligible)
asked
Jan 23
in
ThermoChemistry
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votes
1
answer
55
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A student needs to determine the activation energy for an electrochemical reaction involving the oxidation of Zinc using a voltage of 1.85V, a current of 0.25A and a temperature of 25°C. Given that the standard potential for this reaction at 25°C is -0.76V, what is the activation energy of the reaction?
asked
Jan 22
in
ElectroChemistry
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votes
1
answer
78
views
Why is generalisability an important criterion for evaluating neuroscience theories?
asked
Jan 20
in
Psychology
+1
vote
1
answer
12
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When evaluating theories in existential psychology, what should be considered?
asked
Jan 16
in
Psychology
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votes
1
answer
48
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Where did Positive Psychology originate?
asked
Jan 15
in
Psychology
0
votes
1
answer
66
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Who developed the Transactional Model of Stress and Coping?
asked
Jan 15
in
Psychology
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