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Describe the role of the metal ion in the active site of metalloenzymes, using the coordination chemistry principles. Provide examples of metalloenzymes and their relevant metallic centers, and explain how the metal ion contributes to their function.

asked 4 days ago in Coordination Chemistry by QVZClay58690 (370 points)

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Describe the photochemical properties of lanthanide complexes and explain how they differ from the photochemistry of other transition metal complexes? Provide examples of applications of lanthanide complexes in photochemistry.

asked 4 days ago in PhotoChemistry by MavisClawson (510 points)

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Describe the mechanism of Heterogeneous Catalysis taking place in the Haber process for ammonia synthesis and explain the role of the catalyst in the reaction.

asked 4 days ago in Surface Chemistry by ThaliaEsmond (470 points)

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Describe the factors that contribute to the fluidity of the lipid bilayer of a cell membrane and explain how changes in these factors can affect membrane function.

asked 4 days ago in BioChemistry by LanePeacock (410 points)

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Considering the subtopic of the study of properties of ceramics for high-temperature applications, the problem for the chemistry student to solve could be:What are the specific material properties of ceramics that make them suitable for use in high-temperature applications, and how can these properties be optimized for various industrial or scientific purposes? What types of fabrication methods or processing techniques can be used to create ceramics with desired properties for specific high-temperature applications?

asked 4 days ago in Materials Chemistry by SQIHarriett5 (230 points)

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Considering the reaction: Zn(s) + Cu2+(aq) -> Cu(s) + Zn2+(aq) What is the cell potential (in volts) at 25°C when the concentrations of [Cu2+] and [Zn2+] are 0.5 M and 1.0 M, respectively, and the zinc electrode is the anode? The standard reduction potentials for Cu2+/Cu and Zn2+/Zn are 0.34 V and -0.76 V, respectively.

asked 4 days ago in ElectroChemistry by LorraineZuc6 (470 points)

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Considering the reaction 2SO3(g) ⇌ 2SO2(g) + O2(g) at equilibrium. If the concentration of SO2(g) is increased by adding more SO2(g), what will be the direction of the reaction and how will it affect the concentrations of S03(g), SO2(g), and O2(g)?

asked 4 days ago in Chemical equilibrium by BlancaBlock0 (470 points)

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Considering the Coordination chemistry of transition metals, how would increasing the size of the ligands affect the stability of a coordination compound?

asked 4 days ago in Coordination Chemistry by IrwinPie1108 (500 points)

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1 answer 7 views

Considering carbohydrate metabolism and regulation in the human body, how does the regulation of glycolysis and gluconeogenesis work to maintain blood glucose levels during periods of fasting or intense exercise? Include both the enzymes involved and the hormonal regulation mechanisms in your answer.

asked 4 days ago in BioChemistry by ReynaldoMart (310 points)

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Considering a molecule with a known ground state configuration, how can one determine the electronic excited states and their corresponding optical properties using computational methods in quantum chemistry?

asked 4 days ago in Quantum Chemistry by Mozelle44F33 (870 points)

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Consider two coordination compounds, [Co(NH3)4Cl2] and [Co(NH3)5Cl] with the same formula weight but different physical properties. Explain the type of isomerism present in each compound, draw their structures and identify which compound exhibits optical isomerism.

asked 4 days ago in Coordination Chemistry by KerstinBeest (330 points)

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Consider the synthesis of ibuprofen, a common pain reliever. Starting with benzene and propene, propose a detailed retrosynthesis of ibuprofen. Include all necessary reagents and reaction steps, as well as any potential issues with the synthesis pathway.

asked 4 days ago in Organic Chemistry by KenZbk24359 (510 points)

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1 answer 36 views

Consider the synthesis of ibuprofen from 2-methylpropylbenzene and carbon dioxide, using a series of reactions. As a chemistry student, how would you design an experimental process to isolate and purify ibuprofen from the reaction mixture? Include details on the specific equipment and techniques that can be used, as well as potential challenges and solutions.

asked 4 days ago in Chemical synthesis by CodyA0670468 (430 points)

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Consider the synthesis of a compound with both a carboxylic acid and an alcohol functional group. How would you use protecting groups in organic synthesis to selectively modify only one of these functional groups while leaving the other intact during the synthesis process? Specifically, explain the steps and reagents used to protect and deprotect the functional groups in order to achieve the desired modification.

asked 4 days ago in Organic Chemistry by GenevaKellwa (430 points)

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Consider the redox reaction 2Fe^2+(aq) + H2O2(aq) + 2H^+(aq) ⟷ 2Fe^3+(aq) + 2H2O(l). If a catalyst is added to the reaction mixture at equilibrium, will the concentration of Fe^3+ increase, decrease or remain the same? Justify your answer mathematically.

asked 4 days ago in Chemical equilibrium by TheronBeor24 (410 points)

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Consider the reaction:$$\mathrm{N_2(g) + 3H_2(g) <=> 2NH_3(g)}$$At a certain temperature, the equilibrium constant $K_c$ for this reaction is $5.6 \times 10^{-5}$. If a reaction vessel initially contains only $\mathrm{0.10\,mol}$ of $\mathrm{N_2}$ and $\mathrm{0.20\,mol}$ of $\mathrm{H_2}$, what will be the equilibrium concentrations of $\mathrm{N_2}$, $\mathrm{H_2}$, and $\mathrm{NH_3}$ once the reaction reaches equilibrium?

asked 4 days ago in Chemical reactions by KiaCherry527 (550 points)

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Consider the reaction: 2NOBr(g) <=> 2NO(g) + Br2(g), which has an equilibrium constant of 1.5 x 10^-5 at a certain temperature. If you start with 0.10 M of NOBr and let the reaction reach equilibrium, find the equilibrium concentrations of NOBr, NO, and Br2.

asked 4 days ago in Chemical equilibrium by StevenSparks (450 points)

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1 answer 8 views

Consider the reaction: N2(g) + 3H2(g) ⇌ 2NH3(g)If the reaction mixture initially contains 0.10 mol N2, 0.20 mol H2 and 0.15 mol NH3 at equilibrium at 450 K, and the number of moles of NH3 is increased to 0.25 mol at constant temperature, predict the direction in which the reaction will proceed to reach a new equilibrium.

asked 4 days ago in Chemical equilibrium by EloiseMorshe (410 points)

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Consider the reaction: Cu^2+ + 4NH3 ⇌ [Cu(NH3)4]^2+ If the initial concentration of Cu^2+ is 0.5 M and the initial concentration of NH3 is 2 M, what is the concentration of [Cu(NH3)4]^2+ at equilibrium if the concentration of NH3 is increased to 5 M? (Assume the volume of the solution remains constant and the temperature is kept constant.)

asked 4 days ago in Chemical equilibrium by HelenaFlemin (430 points)

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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?

asked 4 days ago in Chemical equilibrium by GusBeckett50 (270 points)

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