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What is the purity of an unknown substance if its melting point range is between 125°C to 130°C, and the literature value for the melting point of the pure substance is 132°C?
answered
Feb 22
in
Analytical Chemistry
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votes
33
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What is the mechanism of nucleophilic substitution reaction of benzylamine with ethyl iodide in the presence of a strong base?
answered
Feb 20
in
Organic Chemistry
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33
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What is the best reaction condition for synthesizing polystyrene from styrene monomer with a high yield and molecular weight using free radical polymerization?
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Feb 17
in
Chemical synthesis
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59
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What is the hybridization of the central atom in the following compound: SO₂?
answered
Feb 13
in
Inorganic Chemistry
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56
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How does the coordination chemistry of metalloenzymes and metalloproteins affect their structure and function? Provide examples of metalloenzymes or metalloproteins and explain how their coordination chemistry contributes to their catalytic activity.
answered
Feb 12
in
Coordination Chemistry
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38
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What are the effects of chirality on the photochemical properties of molecules and what are some examples of chiral molecules known to exhibit different photochemical behaviors?
answered
Feb 12
in
PhotoChemistry
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31
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How can the design of polymer-based smart materials be optimized for specific applications such as drug delivery, tissue engineering, or sensing?
answered
Feb 7
in
Polymer Chemistry
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37
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How can magnetic resonance spectroscopy be used to determine the structure of complex organic molecules? Provide an example of a molecule and explain how its structure can be determined using this technique.
answered
Feb 6
in
Physical Chemistry
0
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133
views
What is the activation energy and reaction rate constant for the Cl + CH4 -> HCl + CH3 reaction at 298 K, calculated using quantum chemical methods?
answered
Jan 31
in
Computational Chemistry
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63
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What are the steps involved in balancing a chemical equation, and can you provide an example of a balanced equation?
answered
Jan 31
in
Chemical education
0
votes
72
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Calculate the heat capacity of 10 grams of water if the temperature of the water increases by 5°C upon absorption of 200 Joules of heat.
answered
Jan 23
in
Chemical thermodynamics
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78
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Calculate the enthalpy change for the dissolution of 5.00 g of sodium hydroxide (NaOH) in 100.0 g of water (H2O). The temperature change was measured to be -3.45°C. Given that the specific heat of water is 4.18 J/g°C and the density of water is 1.00 g/mL. (Assume that the heat evolved from NaOH is absorbed by the water.)
answered
Jan 23
in
ThermoChemistry
0
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62
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What is the cultural criticism of the Muller-Lyer illusion?
answered
Jan 20
in
Psychology
0
votes
63
views
How might cultural expectations influence gender development?
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Jan 17
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Psychology
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45
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How does attention impact perception?
answered
Jan 17
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Psychology
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77
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What is the criticism of the object relations theory?
answered
Jan 15
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Psychology
0
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44
views
Which muscle is a band-like muscle that extends from the anterior superior iliac spine to the medial side?
answered
Jan 8
in
Science
0
votes
64
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Which gland is located in the sella turcica of the sphenoid bone within the cranial floor?
answered
Jan 8
in
Science
0
votes
63
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Which blood vessels is oxygen transferred through?
answered
Jan 8
in
Science
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45
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Which branch of science is the study of energy, matter, and their interactions?
answered
Jan 8
in
Science
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