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What is the optimal temperature and catalyst used for the synthesis of polyethylene oxide from ethylene oxide monomer, and how do these factors affect the yield and molecular weight of the polymer?
asked
4 days
ago
in
Chemical synthesis
0
votes
1
answer
24
views
How does the mechanism of adsorption differ between Langmuir and Freundlich isotherms in the context of heterogeneous catalysis?
asked
5 days
ago
in
Surface Chemistry
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votes
1
answer
19
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How does the concentration of reactants affect the reaction rate and efficiency in a chemical reaction?
asked
6 days
ago
in
Chemical kinetics
0
votes
1
answer
29
views
What is the net number of ATP molecules generated through oxidative phosphorylation in the Citric Acid Cycle, starting with one molecule of acetyl-CoA?
asked
Feb 14
in
BioChemistry
0
votes
1
answer
32
views
What is the rate constant of a second-order reaction if its concentration is 0.5 M and its half-life is 5 minutes?
asked
Feb 13
in
Chemical reactions
0
votes
1
answer
42
views
How can we control the emission wavelength of quantum dots by varying their size and composition?
asked
Feb 12
in
PhotoChemistry
0
votes
1
answer
35
views
How can the conductivity of solid-state polymer electrolytes be improved for use in high-performance batteries?
asked
Feb 6
in
Polymer Chemistry
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votes
1
answer
47
views
Calculate the standard enthalpy change for the fusion of 100 grams of ice at 0°C to liquid water at 0°C. The specific heat capacity of water is 4.184 J/g°C, the standard enthalpy of fusion of water is 6.01 kJ/mol, and the molar mass of water is 18.015 g/mol. Assume all heat absorbed is used to melt the ice and the temperature remains constant.
asked
Feb 3
in
Chemical thermodynamics
0
votes
1
answer
84
views
What are the different types of biomolecules found in living organisms and how are they classified based on their chemical structures and functions? Provide examples of each type of biomolecule and explain their importance in biological systems.
asked
Jan 31
in
Organic Chemistry
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votes
0
answers
93
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A student needs to prepare a solution containing 50 g of ethanol (C2H5OH) dissolved in 250 g of water (H2O) at 25°C. Assuming the heat of mixing for ethanol and water is -5.02 kJ/mol, calculate the heat released or absorbed when the two substances are mixed. Express your answer in kJ.
asked
Jan 22
in
ThermoChemistry
0
votes
1
answer
75
views
What was the aim of Zimbardo's Stanford prison experiment?
asked
Jan 20
in
Psychology
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votes
1
answer
41
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When did the use of correlation become common in psychological testing?
asked
Jan 20
in
Psychology
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votes
1
answer
30
views
According to the theory of sampling, what is random sampling?
asked
Jan 20
in
Psychology
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votes
1
answer
25
views
What is the difference between normal aging and dementia?
asked
Jan 20
in
Psychology
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votes
1
answer
91
views
How can allyship help to reduce social erasure?
asked
Jan 17
in
Psychology
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votes
1
answer
14
views
When evaluating the cognitive approach, what is a major strength of this perspective?
asked
Jan 16
in
Psychology
0
votes
1
answer
48
views
What is neurocognitive psychology?
asked
Jan 15
in
Psychology
0
votes
1
answer
57
views
Who proposed that everything in the universe exerts a force of attraction on everything else?
asked
Jan 8
in
Science
0
votes
1
answer
13
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Which type of muscle is most common in the human body?
asked
Jan 8
in
Science
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votes
1
answer
63
views
What type of current do generators in cars use?
asked
Jan 8
in
Science
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