Recent activity by KarmaJ651641

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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?

asked 3 days ago in Chemical synthesis

1 answer 25 views

What is the optimal reaction conditions (temperature, pressure, and catalyst) for synthesizing polyethylene oxide with a high molecular weight and low polydispersity index from ethylene oxide monomer?

answered 3 days ago in Chemical synthesis

1 answer 14 views

What is the mechanism of the nucleophilic substitution reaction between bromomethane and ammonia?

answered 3 days ago in Organic Chemistry

1 answer 18 views

How does the Monte Carlo simulation method help to predict the phase transition temperature of a substance accurately?

answered 4 days ago in Computational Chemistry

1 answer 23 views

What are the key factors that affect the efficiency of polymer-based photovoltaic materials and how can they be optimized to improve their performance?

answered 5 days ago in Polymer Chemistry

1 answer 34 views

How does the Calvin cycle in photosynthesis fix carbon atoms into organic molecules, and what are the specific chemical reactions involved in this process?

asked Feb 18 in BioChemistry

1 answer 34 views

What is the effect of increasing the pH on the equilibrium position of the following acid-base reaction: CH3COOH (aq) + H2O (l) ⇌ CH3COO- (aq) + H3O+ (aq) How does the equilibrium shift and what is the new equilibrium constant at a given pH?

answered Feb 13 in Chemical equilibrium

1 answer 33 views

How does the excess input of nitrogen and phosphorus in aquatic ecosystems lead to eutrophication, and what are the potential impacts of eutrophication on water quality and aquatic life?

asked Feb 13 in Environmental Chemistry

1 answer 11 views

How can we control the photochromic behavior of a material by modifying its molecular structure, and what are the key photochemical properties that need to be considered?

asked Feb 12 in PhotoChemistry

1 answer 41 views

How can the principles of quantum mechanics be utilized to predict the catalytic activity and selectivity of a given chemical reaction?

answered Feb 10 in Quantum Chemistry

1 answer 32 views

How can the permeability of polymer-based membranes used in water treatment be optimized while maintaining high selectivity to remove contaminants?

answered Feb 10 in Polymer Chemistry

1 answer 40 views

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

answered Feb 10 in Polymer Chemistry

1 answer 14 views

How can the mechanical and thermal properties of polymer-based composites be optimized for aerospace applications?

asked Feb 7 in Polymer Chemistry

1 answer 28 views

How can the electronic and magnetic properties of metal-organic frameworks be accurately predicted using quantum chemical calculations?

asked Feb 7 in Quantum Chemistry

1 answer 30 views

How can the efficiency of polymer-based photovoltaic materials be improved by optimizing their chemical structure and composition?

asked Feb 7 in Polymer Chemistry

1 answer 29 views

How can the design of a lubricant production system be optimized to minimize environmental impact while maintaining high efficiency and quality standards?

answered Feb 7 in Chemical engineering

1 answer 49 views

How can the critical temperature (Tc) of superconducting materials be improved through the modulation of the crystal structure and composition of the material?

asked Feb 6 in Materials Chemistry

1 answer 33 views

How can Fourier Transform Infrared Spectroscopy (FTIR) be used to identify the chemical composition of a polymer sample?

asked Feb 5 in Polymer Chemistry

1 answer 36 views

How can current teaching methods in chemistry be modified to better support students with learning disabilities, specifically dyslexia and dysgraphia, in understanding and retaining the material?

asked Feb 5 in Chemical education

1 answer 55 views

Here is a problem related to Hess's Law for the student to solve:Suppose you are given the following three equations, each with their respective enthalpy change: (1) 2H2(g) + O2(g) --> 2H2O(l) ΔH₁ = -572 kJ/mol (2) 2H2O(l) --> 2H2(g) + O2(g) ΔH₂ = 472 kJ/mol (3) C(s) + O2(g) --> CO2(g) ΔH₃ = -394 kJ/molUse Hess's law to calculate the enthalpy change (in kJ/mol) for the following reaction: C(s) + 2H2(g) --> CH4(g)

asked Feb 4 in Chemical reactions

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