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0
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How does the molecular weight of a polymer influence its rheological properties in a melt state? Provide experimental evidence to support your answer.
answered
4 days
ago
in
Polymer Chemistry
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21
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How does the molecular weight of a polymer affect its physical properties at different temperatures, and what is the relationship between polymer molecular weight and its glass transition temperature?
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4 days
ago
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Physical Chemistry
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27
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How does the change in temperature affect the folding behavior of a particular protein?
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5 days
ago
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Computational Chemistry
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16
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How does the crystal structure of an inorganic compound affect its stability? Provide specific examples of inorganic compounds and their crystal structures to support your answer.
answered
6 days
ago
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Inorganic Chemistry
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29
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How does the composition of landfill leachate affect the concentration of heavy metals in groundwater and what are the potential health impacts for those exposed to contaminated water?
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Feb 18
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Environmental Chemistry
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44
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How can the understanding of the role of chemistry in society and the economy be improved among the general public, and what are some effective methods that can be used to increase awareness and promote interest in the subject?
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Feb 13
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Chemical education
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42
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Design a distillation column that can effectively separate a mixture of 75% ethanol and 25% water with a feed rate of 1000 kg/hr. Your column should produce a distillate with a composition of at least 95% ethanol and a bottom product with no more than 5% ethanol. Assume the feed mixture enters the column at its boiling point and you have access to a cooling water supply at 20°C for the condenser. Provide a detailed design and justification of your column's operating conditions including temperatures, pressures, and flow rates.
answered
Feb 3
in
Chemical engineering
0
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55
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Calculate the standard cell potential (E°) for the following electrochemical cell:Zn(s) | Zn2+(aq, 0.100M) || Cr3+(aq, 0.050M) | Cr(s)Given: E°cell (Zn2+/Zn) = -0.76 VE°cell (Cr3+/Cr) = -0.74 V
answered
Feb 3
in
Physical Chemistry
0
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41
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How does changing the concentration of reactants affect the rate of reaction and its sustainability in a chemical reaction between hydrogen peroxide and potassium iodide?
answered
Feb 3
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Chemical kinetics
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61
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How do changes in temperature affect the structure and dynamics of a lipid bilayer membrane? Use molecular dynamics simulations to investigate the changes in lipid bilayer properties as temperature increases or decreases.
answered
Jan 31
in
Computational Chemistry
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13
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A student wants to determine the specific surface area of a solid sample using gas adsorption. The sample has a mass of 1 gram and the adsorption isotherm follows the BET model. The student measures the volume of nitrogen gas adsorbed at different pressures and obtains the following data:Pressure (torr) | Volume of nitrogen (cm3)---------------|----------------------- 50 | 24.51 100 | 39.22 200 | 67.38 300 | 90.86 400 | 104.29What is the specific surface area of the sample based on the BET model?
answered
Jan 22
in
Surface Chemistry
0
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70
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What is the IUPAC name for the following compound: CH3CH2CH2CH2CH2CH3?
answered
Jan 21
in
Organic Chemistry
0
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38
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When evaluating a theory, what is the criterion for coherence?
answered
Jan 20
in
Psychology
0
votes
59
views
When was the Stroop effect discovered?
answered
Jan 20
in
Psychology
0
votes
42
views
Where does source monitoring occur?
answered
Jan 20
in
Psychology
0
votes
45
views
What is nerve deafness?
answered
Jan 20
in
Psychology
0
votes
71
views
What is the assumption of the social learning theory of conflict?
answered
Jan 17
in
Psychology
0
votes
43
views
What are the benefits of incorporating indigenous psychology into research and practice?
answered
Jan 14
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Psychology
0
votes
32
views
What is the main concept of the trait approach to personality?
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Jan 10
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Psychology
0
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37
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Which type of eruptions created the entire ocean floor?
answered
Jan 8
in
Science
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