Answers by MartyKindler

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What are the factors affecting the size and shape of nanoparticles, and how can these properties be manipulated to enhance their catalytic activity?

answered 1 day ago in Physical Chemistry

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What is the optimum temperature and concentration of initiator for the synthesis of high molecular weight polyacrylonitrile from acrylonitrile monomer, and what effect does changing these parameters have on the yield and properties of the polymer?

answered 3 days ago in Chemical synthesis

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What is the optimal reaction conditions, including temperature and molar ratio, for the synthesis of nylon-6,6 from adipic acid and hexamethylenediamine to maximize yield and minimize side reactions?

answered 3 days ago in Chemical synthesis

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What is the effect of different catalysts on the polymerization of ethylene monomer during the synthesis of polyethylene, in terms of yield and quality of the final product?

answered 5 days ago in Chemical synthesis

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What is the dipole moment of the hydrogen chloride (HCl) molecule and why is the bond polar?

answered 6 days ago in Chemical bonding

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How does the concentration of reactants affect the rate of reaction in the sustainability of a chemical reaction?

answered 6 days ago in Chemical kinetics

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What are the roles of metal ions in metalloenzymes and metalloproteins and how does their coordination chemistry facilitate biological processes?

answered Feb 13 in Coordination Chemistry

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How can the knowledge of the molecular structure of a specific target virus be used to design drugs that selectively and effectively target the virus, while minimizing side effects on human cells?

answered Feb 7 in Medicinal Chemistry

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How can the design and synthesis of a polymer-based sensor or actuator be optimized for maximum sensitivity and efficiency?

answered Feb 6 in Polymer Chemistry

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How can computational methods be used to design and predict the properties of supramolecular assemblies formed by organic molecules?

answered Feb 5 in Computational Chemistry

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How can chemistry students gain practical experience and develop their skills in a field with limited availability of chemistry-related internships and job opportunities?

answered Feb 5 in Chemical education

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Given the following half-reactions:Cu2+ (aq) + 2 e- -> Cu (s) E° = +0.34 VZn2+ (aq) + 2 e- -> Zn (s) E° = -0.76 VCalculate the equilibrium constant (K) for the reaction: Cu2+ (aq) + Zn (s) -> Zn2+ (aq) + Cu (s)

answered Feb 4 in ElectroChemistry

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Calculate the HOMO-LUMO energy gap of a conjugated polymer with a repeating unit of poly(p-phenylene vinylene) (PPV) using quantum chemical methods (such as Density Functional Theory) and determine whether the polymer is expected to exhibit optoelectronic activity in the visible region of the electromagnetic spectrum.

answered Jan 23 in Quantum Chemistry

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60 views

Calculate the equilibrium constant (K) for the formation of the complex ion [Fe(SCN)₂⁺] when 3.0 x 10⁻³ moles of Fe(NO₃)₃ and 1.5 x 10⁻³ moles of NaSCN are mixed in a 250 mL solution. The solution shows that the concentration of Fe(SCN)₂⁺ is 1.2 x 10⁻³ M at equilibrium.

answered Jan 23 in Chemical equilibrium

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Calculate the enthalpy of ionization for sodium ion (Na+) given that the first ionization energy of sodium (Na) is 495.8 kJ/mol and the second ionization energy is 4562 kJ/mol.

answered Jan 23 in ThermoChemistry

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Calculate the enthalpy change for the isomerization of pentene-1 to pentene-2 if 2.5 g of pentene-1 is isomerized using a catalyst and the temperature increases from 25° C to 35° C. The heat capacity of the calorimeter is 15.6 J/deg and the density of the solution is 0.98 g/mL. Assume the heat capacity of the solution is equal to the heat capacity of water (4.18 J/g deg).

answered Jan 23 in ThermoChemistry

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An aqueous solution of 1.0 M HCl is oxidized by a lead anode in a half-cell, while a half-cell with a hydrogen electrode is used as the standard reduction potential. If the electrode potential of the lead electrode is -0.13 V, what is the cell potential of the overall reaction?

answered Jan 22 in ElectroChemistry

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50 views

Why is the ecological approach criticised for its lack of generalisability?

answered Jan 20 in Psychology

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Where did Skinner conduct his research?

answered Jan 20 in Psychology

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67 views

Why is it important to communicate boundaries clearly?

answered Jan 20 in Psychology

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