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How does the presence of an intermediate in a chemical reaction affect the rate of the reaction? Provide specific examples and a detailed explanation of the mechanisms involved.
asked
Feb 22
in
Chemical kinetics
0
votes
1
answer
24
views
How does the pH level affect the rate of the photochemical reaction between a photosensitizer and a substrate?
asked
Feb 22
in
PhotoChemistry
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votes
1
answer
31
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How does the intensity of light affect the reaction rate of the chemical reaction between potassium permanganate and oxalic acid in acidic medium?
asked
Feb 20
in
Chemical kinetics
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votes
1
answer
30
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How does the inhibition of the enzyme phosphofructokinase (PFK) affect the glycolytic pathway and ultimately the production of ATP in muscle cells during exercise?
asked
Feb 20
in
BioChemistry
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votes
1
answer
30
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What is the critical micelle concentration (CMC) of sodium dodecyl sulfate (SDS) in water at 25°C, given that the molar mass of SDS is 288.4 g/mol and its molecular formula is C12H25NaO4S? Also, explain the mechanism of micelle formation in this process.
asked
Feb 19
in
Surface Chemistry
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votes
1
answer
26
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What is the balanced chemical equation for the preparation of 2,4-dichloronitrobenzene from nitrobenzene and chlorine gas, and what is the theoretical yield of 2,4-dichloronitrobenzene if 10 grams of nitrobenzene and an excess of chlorine gas are reacted?
asked
Feb 17
in
Chemical synthesis
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votes
1
answer
57
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What type of bonding is present in solid sodium chloride (NaCl)? Is it ionic, covalent, or metallic? Provide a detailed explanation supporting your answer.
asked
Feb 13
in
Chemical bonding
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votes
1
answer
57
views
What are the methods for improving the efficiency of light emission in polymer-based optical materials?
asked
Feb 13
in
Polymer Chemistry
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votes
1
answer
69
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How does the excess use of fertilizers in agriculture contribute to nitrogen and phosphorus pollution in water bodies and what are the potential harmful effects on aquatic life and human health?
asked
Feb 13
in
Environmental Chemistry
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1
answer
64
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Calculate the standard enthalpy change of the reaction between hydrogen gas and chlorine gas to form hydrogen chloride gas using the bond enthalpy values for H-H, Cl-Cl and H-Cl bonds.
asked
Feb 3
in
Quantum Chemistry
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votes
1
answer
95
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Calculate the enthalpy change for the dissolution of 10g of NaCl in 100g of water, given that the initial and final temperatures are 25°C and 20°C respectively. The molar mass of NaCl is 58.44 g/mol and the specific heat capacity of water is 4.18 J/(g°C).
asked
Jan 23
in
ThermoChemistry
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votes
1
answer
76
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A chemistry student is studying the adsorption of a gas on a solid surface using the Langmuir adsorption isotherm. The student knows that the maximum adsorption capacity (θ_max) of the surface is 0.5 mol/L and that the equilibrium constant (K) for the process is 0.02 L/mol. The student is asked to calculate the fraction of the surface covered by the adsorbate when the gas pressure is 2 atm at the temperature of the experiment.
asked
Jan 22
in
Surface Chemistry
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votes
1
answer
98
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A chemistry experiment was conducted to determine the rate constant for the reaction between hydrogen peroxide and iodide ion in acidic medium. The initial concentrations of hydrogen peroxide and iodide ion were 0.2 M and 0.1 M respectively. The reaction was carried out at 25°C and the time taken for the completion of the reaction was 60 seconds. Based on these data, what is the rate constant for the reaction?
asked
Jan 22
in
Chemical kinetics
0
votes
1
answer
143
views
How can the social learning theory be applied in real-life situations?
asked
Jan 20
in
Psychology
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votes
1
answer
62
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According to the social identity theory, why do individuals discriminate against out-group members?
asked
Jan 17
in
Psychology
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votes
1
answer
97
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Compare the theoretical mechanisms underlying the effects of benzodiazepines and serotonin agonists in the treatment of anxiety disorders.
asked
Jan 16
in
Psychology
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1
answer
134
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According to the Cognitive Map Theory, what are cognitive maps?
asked
Jan 15
in
Psychology
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votes
1
answer
80
views
What is the prefrontal cortex responsible for?
asked
Jan 15
in
Psychology
0
votes
1
answer
78
views
What is the commonality in trait theory and the 'Great Man' theory?
asked
Jan 14
in
Psychology
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votes
1
answer
89
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What is the difference between sensation and perception?
asked
Jan 13
in
Psychology
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