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User Karine04K24
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What is the relationship between the frequency of infrared radiation and the type of molecular vibrations observed in a sample of organic compound?
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1 day
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Physical Chemistry
1
answer
28
views
What is the balanced chemical equation for the synthesis reaction of calcium nitrate and ammonium sulfate?
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3 days
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Chemical reactions
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12
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What is the effect of concentration and duration of exposure of a photosensitizer on the rate of photochemical reactions?
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3 days
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PhotoChemistry
1
answer
21
views
What is the pKa value of acetic acid, and what is the pH of a 0.1 M solution of acetic acid? Also, what is the percent ionization of acetic acid in this solution? (Assume temperature to be 25°C and the ionization of acetic acid to be a one-step process.)
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3 days
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Organic Chemistry
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17
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How does the pH affect the rate of enzymatic reaction catalyzed by lactase?
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4 days
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BioChemistry
1
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30
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What is the molecular geometry of a molecule that has 2 bonding pairs and 2 lone pairs of electrons on its central atom?
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5 days
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Chemical bonding
1
answer
6
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What is the effect of changing the concentration of reactants on the rate of the iodine clock reaction between potassium iodide and hydrogen peroxide?
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5 days
ago
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Chemical kinetics
1
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18
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How does the variation in the reaction rate affect the equilibrium constant for a given chemical reaction?
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5 days
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Chemical kinetics
1
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29
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What is the effect of temperature on the rate of reaction between sodium thiosulphate and hydrochloric acid, and how can this relationship be quantified using the Arrhenius equation?
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6 days
ago
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Chemical kinetics
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24
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What is the effect of concentration on the reaction rate of catalytic hydrogenation of butene?
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6 days
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Physical Chemistry
1
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22
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What is the crystal field splitting energy for an octahedral complex with ligand field stabilisation energy of 4000 cm^-1? Show the calculation and determine whether the complex will be high spin or low spin.
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6 days
ago
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Coordination Chemistry
1
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31
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What are the factors that influence the adhesion of a polymer to a surface? How can the surface properties of a polymer be modified to enhance its adhesion to a particular substrate?
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Feb 17
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Polymer Chemistry
1
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20
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How does the addition of nanoparticles to a polymer matrix affect the thermal and mechanical properties of the resulting nanocomposite material?
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Feb 17
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Polymer Chemistry
1
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32
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How does the activation energy of a chemical reaction change with the addition of a catalyst, as predicted by quantum chemical calculations?
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Feb 17
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Computational Chemistry
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32
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How can the use of fertilizers in sustainable agriculture be optimized to minimize environmental impact while still maintaining crop yield?
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Feb 14
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Environmental Chemistry
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30
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How can we optimize the synthesis reaction conditions, such as temperature and pressure, to enhance the crystal growth of metal-organic frameworks (MOFs) for more efficient gas separation?
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Feb 14
in
Materials Chemistry
1
answer
33
views
In the coordination compound [Co(en)2Cl2]Cl, identify the types of isomerism present and draw the structures of each isomer.
asked
Feb 13
in
Coordination Chemistry
1
answer
36
views
What is the relationship between a molecule and its enantiomer in terms of chirality, and how can their properties differ? Provide an example of two enantiomers with differing properties.
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Feb 13
in
Organic Chemistry
1
answer
33
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How can the photochemical properties of luminescent materials be optimized to enhance their efficiency in light-emitting devices?
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Feb 10
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PhotoChemistry
1
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43
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How can the mechanical and thermal properties of polymer-based materials for 3D printing be optimized for specific applications?
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Feb 10
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Polymer Chemistry
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