Recent activity by TrenaSee705

1 answer 32 views

How does the computational method used in quantum chemical calculations of excited states affect the accuracy of electronic transitions predictions?

answered Feb 17 in Computational Chemistry

1 answer 27 views

What are the main sources of Persistent Organic Pollutants (POPs) and how do they get accumulated in different environmental compartments?

answered Feb 14 in Environmental Chemistry

1 answer 36 views

What is the role of metal ions in the catalytic activity of metalloenzymes and metalloproteins? Provide specific examples and discuss the coordination geometry and ligand environment of the metal ions in these enzymes/proteins.

asked Feb 13 in Coordination Chemistry

1 answer 35 views

How does increasing the pH of a redox reaction involving copper ions and iodide ions affect the equilibrium concentration of copper ions and iodine molecules?

asked Feb 13 in Chemical equilibrium

1 answer 25 views

How do the photochemical properties of enantiomers differ and what effect does this have on their reactivity and reaction outcomes?

asked Feb 13 in PhotoChemistry

1 answer 10 views

How can the synthesis of metal-organic frameworks be optimized to achieve higher yield and purity?

answered Feb 11 in Materials Chemistry

1 answer 33 views

How can the synthesis of metal-organic frameworks (MOFs) be optimized to increase their surface area and stability, while also reducing the use of solvents and environmental impact of the process?

answered Feb 11 in Materials Chemistry

1 answer 31 views

How can the magnetic properties of different materials be analyzed and compared to determine their suitability for use in data storage applications?

answered Feb 7 in Materials Chemistry

1 answer 30 views

How can computational studies of enzyme catalysis help in the development of new drugs for treating diseases?

answered Feb 5 in Computational Chemistry

1 answer 30 views

Determine the standard enthalpy change for the following reaction: 2 Fe (s) + 3/2 O2 (g) → Fe2O3 (s) Given the following data: - ΔHf° of Fe2O3 (s) = -826 kJ/mol - ΔHf° of O2 (g) = 0 kJ/mol - The heat capacity of the calorimeter is 135 J/°C Assume that the reaction takes place at constant pressure and that the heat absorbed by the calorimeter is negligible.

answered Feb 4 in Chemical thermodynamics

1 answer 36 views

Design a distillation column for the separation of a mixture composed of 50% ethanol and 50% water. The column must produce a distillate that is at least 95% ethanol and a bottoms stream that is at most 5% ethanol. The feed rate is 1000 kg/h and the reflux ratio is to be determined by the student. Provide the complete design of the distillation column including the number of theoretical trays, feed tray location, and the diameter of the column.

answered Feb 3 in Chemical engineering

1 answer 76 views

How does the aromaticity of a compound affect its reactivity towards electrophilic substitution reactions? Provide relevant examples to support your answer.

answered Jan 31 in Organic Chemistry

1 answer 91 views

What is the concentration (in molarity) of a hydrochloric acid solution, HCl, if 25.0 ml of a 0.100 M sodium hydroxide solution, NaOH, was required to neutralize 35.0 ml of the HCl solution during a titration?

asked Jan 30 in Analytical Chemistry

1 answer 56 views

A student wants to determine the rate constant for the reaction between hydrogen and iodine gases, given the following experimental data:-At t=0, the initial concentration of hydrogen is 0.025 M and iodine is 0.015 M.-10 seconds later, the concentration of hydrogen is 0.018 M and iodine is 0.022 M.-The reaction is second-order with respect to hydrogen, and first-order with respect to iodine.What is the rate constant for the reaction?

asked Jan 22 in Chemical kinetics

1 answer 64 views

A student needs to calculate the maximum electrical work that can be obtained from an electrochemical cell of standard hydrogen electrode (SHE) potential -0.76 V and a zinc electrode potential of -0.46 V, when 0.5 moles of zinc metal is oxidized to form zinc ions at 25 °C. Assume that the Faraday constant is 96,485 Coulombs per mole of electrons and the gas constant is 8.314 J/mole.K.

asked Jan 22 in ElectroChemistry

1 answer 102 views

What is the oxidation product of 2-methyl-1-propanol using Jones' reagent, and what is the mechanism of the reaction?

answered Jan 21 in Organic Chemistry

1 answer 54 views

Why is the foot-in-the-door technique effective?

asked Jan 20 in Psychology

1 answer 32 views

Please evaluate the social penetration theory.

asked Jan 20 in Psychology

1 answer 61 views

What was the aim of the Bobo doll experiment?

answered Jan 20 in Psychology

1 answer 62 views

When might Maslow's hierarchy of needs be useful?

asked Jan 20 in Psychology

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