Recent activity by BobBar745884

1 answer 25 views

How does the size and shape of nanoparticles affect their optical and electronic properties?

asked 1 day ago in Physical Chemistry

1 answer 22 views

What is the polarity of the bond between nitrogen and chlorine in the molecule NCl3?

asked 3 days ago in Chemical bonding

1 answer 15 views

What is the optimal ratio of toluene to nitric acid to obtain the highest yield of 2,4,6-trinitrotoluene during the preparation process?

answered 3 days ago in Chemical synthesis

1 answer 19 views

What is the optimal composition of a metal alloy for use in the construction of a high-temperature turbine blade for aerospace applications, and what properties of the alloy are responsible for its superior performance under these conditions?

asked 3 days ago in Materials Chemistry

1 answer 27 views

What is the most effective chemical process for the recovery of precious metals such as gold, silver, and palladium from electronic waste, and how can this process be optimized for maximum efficiency and yield?

answered 4 days ago in Chemical engineering

1 answer 29 views

How does the body biosynthesize the non-essential amino acids and what are the chemical reactions involved?

asked 5 days ago in BioChemistry

1 answer 24 views

What temperature, pressure, and chemical conditions are required for the Haber process to produce ammonia at an optimum rate for fertilizer production, given a certain amount of reactants?

asked 5 days ago in Chemical engineering

1 answer 27 views

What is the electronegativity difference between a nitrogen atom (EN = 3.04) and an oxygen atom (EN = 3.44)?

asked 5 days ago in Chemical bonding

1 answer 22 views

How does the chemical structure of metallofullerenes and metalloclusters affect their magnetic properties?

asked Feb 18 in Coordination Chemistry

1 answer 28 views

What factors affect the photoluminescence efficiency of phosphorescent materials and how can we optimize them for various applications?

answered Feb 14 in PhotoChemistry

1 answer 32 views

How can we optimize the critical temperature and magnetic field tolerance of superconducting materials for practical applications such as electricity transmission and high-speed computing?

asked Feb 14 in Materials Chemistry

1 answer 28 views

What is the percentage composition of copper (Cu), iron (Fe), and sulfur (S) in a sample of pyrite? Use elemental analysis to determine the amount of each element present in the sample and calculate the percentage composition by mass.

asked Feb 13 in Analytical Chemistry

1 answer 30 views

What is the oxidation state of sulfur in Na2S2O3 (sodium thiosulfate)?

asked Feb 13 in Chemical reactions

1 answer 29 views

How can we improve the compatibility of polymer blends and prevent phase separation?

asked Feb 13 in Polymer Chemistry

1 answer 42 views

How can universities and institutions improve diversity in the chemistry field and create more opportunities for underrepresented minorities to succeed?

asked Feb 13 in Chemical education

1 answer 7 views

What specific materials and factors need to be considered in designing a system for the production of hydrogen fuel to ensure maximum efficiency and sustainability?

asked Feb 12 in Chemical engineering

1 answer 48 views

Calculate the standard Gibbs free energy change for the following electrochemical reaction at 25°C:Cu(s) + 2Ag⁺(aq) → Cu²⁺(aq) + 2Ag(s) Given: E°cell = 0.46 V, F = 96,500 C/mol, R = 8.314 J/K·mol, and the standard reduction potentials at 25°C are Cu²⁺(aq) + 2e⁻ → Cu(s) (E°red = 0.34 V) and Ag⁺(aq) + e⁻ → Ag(s) (E°red = 0.80 V).

asked Feb 3 in ElectroChemistry

1 answer 60 views

What is the Dipole Moment of Nitrogen Molecule Using Ab Initio Calculations?

asked Jan 31 in Computational Chemistry

1 answer 88 views

What is the predicted boiling point of a substance that consists of molecules with strong hydrogen bonding compared to a substance with weak London dispersion forces?

asked Jan 30 in Chemical bonding

1 answer 49 views

A copper rod with a surface area of 5 cm² is coupled with an iron rod with a surface area of 10 cm² to form a galvanic cell. When the circuit is closed, the current flows for 2 hours and the weight loss of the iron rod was found to be 0.58 g. Determine the corrosion rate of the iron rod in millimeters per year (mm/yr) assuming a density of 7.86 g/cm³ for the iron.

asked Jan 22 in ElectroChemistry

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