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How can polymer chain length distribution be determined using gel permeation chromatography and what are the limitations and advantages of this technique?
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10 hours
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Polymer Chemistry
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30
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How can chemistry educators better support students with learning disabilities in understanding the abstract concepts and complex equations involved in stoichiometry?
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Chemical education
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Determine the HOMO and LUMO energies of the ethylene molecule using a molecular orbital calculation, and predict whether the molecule has any potential for conjugation.
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Quantum Chemistry
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Consider the reaction: 2H2O (g) ⇄ 2H2 (g) + O2 (g) At 1000 K, the equilibrium constant Kc for this reaction is 4.17 x 10^-5. Suppose that initially, 0.10 moles of H2O, 0.20 moles of H2, and 0.20 moles of O2 are placed in a 1.0 L container at 1000 K. What will be the equilibrium concentrations of H2O, H2, and O2?
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Chemical equilibrium
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What is the optimal polymer carrier for the targeted delivery of a specific drug molecule to a particular site in the body?
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5 days
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Polymer Chemistry
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How can X-ray fluorescence spectroscopy be utilized to identify the presence of toxic heavy metals, such as lead and cadmium, in a given sample of soil?
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Analytical Chemistry
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How can ion-selective electrodes be used to detect and quantify the concentration of chloride ions in a water sample?
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Jan 29
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Analytical Chemistry
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27
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Calculate the corrosion potential of a silver metal in a solution containing 0.1 M silver nitrate and 1 M nitric acid given that the standard reduction potential of the Ag⁺/Ag couple is +0.80 V and the standard reduction potential of the NO₃⁻/NO₂⁻ couple is +0.96 V.
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Jan 23
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ElectroChemistry
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According to top-down processing theory, what is perception influenced by?
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Jan 20
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Psychology
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Who created the phi phenomenon and when?
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Jan 20
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Psychology
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How do evolutionary theories contribute to biopsychology?
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Jan 17
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Psychology
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53
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When does confidentiality become particularly important in a research study?
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Jan 17
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Psychology
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17
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What is theoretical bias?
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Jan 16
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Psychology
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39
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According to the Psychoanalytic Theory, what is the role of unconscious thoughts in behaviour?
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Jan 15
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Psychology
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Who proposed the sociometer theory of self-esteem?
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Jan 15
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Psychology
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What is the purpose of a control group?
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Psychology
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What is the difference between cognitive and emotional intelligence?
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Jan 13
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Psychology
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What is the definition of intelligence?
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Jan 13
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Psychology
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25
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Which type of membrane are ribosomes surrounded by?
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Jan 8
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Science
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What type of pollution is generated by power plants and factories that can directly raise the temperature of water?
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Jan 8
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Science
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