Recent activity by NickolasShum

1 answer 25 views

What is the optimal reaction conditions (temperature, pressure, concentration) for the preparation of 2,4,6-trinitrotoluene from toluene and nitric acid, and what is the yield of the reaction under these conditions?

answered Feb 22 in Chemical synthesis

1 answer 26 views

Identify the type of inorganic solid formed by the following elements: sodium and chlorine.

asked Feb 20 in Inorganic Chemistry

1 answer 48 views

How does the arrangement and structure of supramolecular assemblies affect their photochemical properties? Provide examples of supramolecular assemblies and their corresponding photochemical properties.

answered Feb 17 in PhotoChemistry

1 answer 31 views

How does the addition of a strong base affect the percentage of ionization of a weak acid, such as acetic acid, in a solution with an initial concentration of 0.1 M?

asked Feb 17 in Chemical equilibrium

1 answer 29 views

How does the addition of a catalyst affect the equilibrium position of the redox reaction between potassium permanganate and oxalic acid? Provide a detailed explanation of the calculations involved in solving this problem.

asked Feb 17 in Chemical equilibrium

1 answer 31 views

How does surface modification of nanoparticles affect their catalytic activity in a specific chemical reaction?

answered Feb 17 in Surface Chemistry

1 answer 34 views

What factors affect the rate of inorganic reactions and how can they be manipulated to increase or decrease the rate of the reaction?

answered Feb 14 in Inorganic Chemistry

1 answer 35 views

How does prolonged exposure to high levels of air pollutant particles, such as PM2.5, affect the human respiratory system and overall health?

answered Feb 14 in Environmental Chemistry

1 answer 37 views

How can we predict the selectivity and activity of a catalyst in a specific reaction using quantum chemistry calculations?

asked Feb 14 in Quantum Chemistry

1 answer 43 views

How can the yield and purity of a pharmaceutical drug be optimized in the process of its production using chemical engineering principles and techniques?

answered Feb 14 in Chemical engineering

1 answer 60 views

What is the mechanism of energy transfer in a chemical reaction and how can it be described using quantum mechanics?

asked Feb 13 in Quantum Chemistry

1 answer 84 views

How can the synthesis of biodegradable polymers be optimized to achieve the desired mechanical properties for its intended use in a given application?

asked Feb 11 in Polymer Chemistry

1 answer 40 views

How can the presence of heavy metal contaminants in soil affect the growth and quality of crops, and what techniques can be used to remediate the contaminated soil in order to minimize their negative impact on agriculture?

answered Feb 10 in Environmental Chemistry

1 answer 42 views

How can the mechanical properties and biocompatibility of polymer-based materials used in 3D printing be optimized for biomedical applications?

asked Feb 10 in Polymer Chemistry

1 answer 34 views

How can the electrical conductivity and stability of graphene be improved for practical application in electronic devices?

answered Feb 7 in Materials Chemistry

1 answer 37 views

How can the electric double layer be manipulated to control the colloidal stability of a sol?

asked Feb 7 in Surface Chemistry

1 answer 34 views

How can chemistry teachers or institutions provide adequate and effective hands-on experimentation opportunities for students, despite limited resources and equipment?

asked Feb 5 in Chemical education

1 answer 61 views

Design a heat exchanger for a specific process involving the heating of ethanol from 20°C to 80°C. The process flow rate of ethanol is 200 L/hr, and the heating medium is water available at 90°C with a flow rate of 500 L/hr. The heat transfer coefficient for the heat exchanger is 1000 W/m²K. Determine the surface area required for the heat exchanger to achieve the desired heating of ethanol using the given data.

answered Feb 4 in Chemical engineering

1 answer 70 views

Can the unique photophysical properties of lanthanide complexes be harnessed for efficient light harvesting and photocatalysis? Explore the photochemical properties of selected lanthanide complexes to demonstrate their potential applications in these fields.

asked Feb 3 in PhotoChemistry

1 answer 56 views

Calculate the standard enthalpy of precipitation for the reaction: AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq) given that the standard enthalpies of formation for AgNO3(aq), NaCl(aq), AgCl(s), and NaNO3(aq) are -123.2 kJ/mol, -407.3 kJ/mol, -127.0 kJ/mol, and -467.3 kJ/mol, respectively.

asked Feb 3 in ThermoChemistry

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