Recent activity by MuhammadNuna

1 answer 30 views

What are the optimal conditions (temperature, length of reaction, concentration of reactants) for the preparation of 2,4,6-trinitrotoluene from toluene and nitric acid to achieve the highest yield possible?

answered Feb 22 in Chemical synthesis

1 answer 33 views

What is the maximum adsorption capacity (in moles per square meter) of a surface with a Langmuir adsorption isotherm when the equilibrium constant is 2 x 10^3 M^-1 and the concentration of adsorbate in solution is 5 x 10^-4 M?

answered Feb 20 in Surface Chemistry

1 answer 27 views

How do the electronic and molecular structures of a transition metal complex influence the absorption and emission spectra observed through UV-Vis and fluorescence spectroscopy techniques?

answered Feb 20 in Coordination Chemistry

1 answer 24 views

How does the addition of specific elements affect the mechanical properties (such as strength and durability) of metal alloys used in aerospace applications, and how can this knowledge be used to optimize their performance?

answered Feb 17 in Materials Chemistry

1 answer 28 views

How does surface chemistry of corrosion and passivation affect the durability of metallic objects exposed to different corrosive environments over time?

asked Feb 17 in Surface Chemistry

1 answer 33 views

What is the mechanism by which Nitration of Benzene occurs in organic chemistry, and what is the effect of varying the concentration of Nitric acid on the rate of reaction?

answered Feb 13 in Organic Chemistry

1 answer 70 views

What is the bond order of the nitrogen molecule (N2) and how is it determined through molecular orbital theory?

asked Feb 13 in Chemical bonding

1 answer 70 views

What is the role of luciferin and luciferase in the photochemical process of bioluminescent organisms and how do their properties contribute to the emission of light?

answered Feb 13 in PhotoChemistry

1 answer 56 views

What is the effect of temperature on the conformational behavior of a polymer chain in a Monte Carlo simulation?

answered Feb 13 in Computational Chemistry

1 answer 88 views

What is the primary difference between furan and pyrrole in terms of their aromaticity, and how does that affect their chemical reactivity?

asked Feb 13 in Organic Chemistry

1 answer 36 views

How can the synthesis of polyethylene be optimized to increase the yield of high-density polyethylene (HDPE) with desirable mechanical and thermal properties from the ethylene monomer?

asked Feb 11 in Chemical synthesis

1 answer 36 views

How can the efficiency of the process for the production of fragrance be improved while minimizing environmental impact and reducing costs?

answered Feb 7 in Chemical engineering

1 answer 46 views

How can chemistry educators make the subject more engaging and interesting for students to increase their interest in the subject?

answered Feb 4 in Chemical education

1 answer 88 views

Design a process for the production of a biodegradable detergent that is effective in removing stains from clothes and is environmentally friendly, using renewable resources for its production. The process should take into account the cost-effectiveness, safety, and quality of the final product.

answered Feb 4 in Chemical engineering

1 answer 61 views

Consider an electrochemical cell with a copper metal electrode immersed in a solution of copper sulfate, and a platinum electrode in a solution of hydrogen sulfate. The current is measured at 25°C while the cell potential is varied. The following data is obtained for the anodic and cathodic currents:Anodic current:Cell potential (V): 0.20 0.30 0.40 0.50 0.60Current (mA): 1.01 1.80 3.04 4.58 6.25Cathodic current:Cell potential (V): -0.20 -0.30 -0.40 -0.50 -0.60Current (mA): -1.00 -1.79 -3.02 -4.54 -6.19Calculate the anodic and cathodic Tafel slopes for this electrochemical cell.

answered Feb 3 in ElectroChemistry

1 answer 83 views

Calculate the standard enthalpy change (in kJ/mol) for the following reaction involving solutions: NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)Given the following enthalpy values:NaOH(aq): -469.2 kJ/mol HCl(aq): -167.2 kJ/mol NaCl(aq): -411.2 kJ/mol H2O(l): -285.8 kJ/mol

asked Feb 3 in Chemical thermodynamics

1 answer 96 views

How can we design engaging and interactive chemistry lessons to increase student interest and participation in chemistry classes?

asked Jan 30 in Chemical education

1 answer 94 views

What steps can chemistry educators take to increase access to current research and incorporate it into coursework for undergraduate students who may have limited exposure to the latest scientific advancements in the field of chemistry?

asked Jan 30 in Chemical education

1 answer 100 views

A student needs to determine the mass of silver that can be deposited on a silver electrode using a current of 2.5 A for 3 hours in a solution containing 0.2 M silver ions. What is the mass of silver deposited on the electrode? (Assuming 100% current efficiency and atomic weight of silver is 107.9 g/mol)

asked Jan 22 in ElectroChemistry

1 answer 56 views

Who conducted the famous 'marshmallow experiment'?

answered Jan 20 in Psychology

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