Recent activity by BarryEisenbe

1 answer 21 views

What is the effect of the reaction intermediate concentration on the rate of reaction in the reaction between xylose and nitric acid?

answered 3 days ago in Chemical kinetics

1 answer 28 views

What is the relationship between the rate of a chemical reaction and the equilibrium constant? Provide experimental evidence to support your answer.

answered 3 days ago in Chemical kinetics

1 answer 18 views

What is the most efficient catalyst for the synthesis of polypropylene from propylene monomer and how does its concentration and reaction conditions affect the yield and quality of the final polypropylene product?

answered 4 days ago in Chemical synthesis

1 answer 27 views

How does the intensity of light affect the rate of a photochemical reaction? Provide experimental evidence to support your answer.

asked 5 days ago in Physical Chemistry

1 answer 25 views

How does the electronic conductivity of graphene change with doping concentration under an applied electric field, as predicted by density functional theory calculations?

asked 5 days ago in Computational Chemistry

1 answer 37 views

What is the effect of temperature on the phase transition of liquid crystals and how does it affect their optical properties?

asked 5 days ago in Physical Chemistry

1 answer 34 views

What are the photochemical properties of spiropyran and how do these properties relate to its photochromic behavior?

answered Feb 14 in PhotoChemistry

1 answer 28 views

How does Monte Carlo simulation help in understanding the phase transitions of a substance, and how can it be applied to predict the behavior of a liquid-solid transition of a molecule at different temperatures?

asked Feb 13 in Computational Chemistry

1 answer 33 views

What is the role of DNA polymerases during DNA replication and how do they ensure the accuracy of DNA synthesis? Provide specific examples of proofreading mechanisms used by DNA polymerases to maintain the integrity of the genetic code.

asked Feb 12 in BioChemistry

1 answer 54 views

How can the study of chemistry help in solving real-world problems related to sustainability and economic development?

answered Feb 11 in Chemical education

1 answer 34 views

How can the lack of emphasis on environmental chemistry in chemical education affect the ability of future chemists to create sustainable solutions for environmental issues?

answered Feb 7 in Chemical education

1 answer 30 views

How can density functional theory calculations optimize the efficiency of catalytic reactions in the production of ammonia?

asked Feb 6 in Computational Chemistry

1 answer 33 views

How can medicinal chemists modify existing antibiotics to create new compounds that are effective against drug-resistant bacteria strains, specifically targeting the mechanisms that these bacteria use to resist traditional antibiotics?

answered Feb 5 in Medicinal Chemistry

1 answer 35 views

How can computational chemistry and molecular modeling methods be used to predict the properties of a new drug molecule, such as its solubility, stability, and effectiveness in treating a specific disease? Specifically, how do molecular optimization techniques like ligand docking and quantum chemical calculations aid in the design and development of safe and efficacious drugs?

answered Feb 5 in Physical Chemistry

1 answer 46 views

Determine the standard enthalpy change for the dissolution of 5.00 grams of magnesium chloride in water, given that the molar mass of MgCl2 is 95.21 g/mol and the standard enthalpy change of formation for magnesium chloride is -641.3 kJ/mol.

answered Feb 4 in Chemical thermodynamics

1 answer 48 views

Calculate the standard enthalpy change for the reaction: 2NaOH (s) + H2SO4 (aq) → Na2SO4 (aq) + 2H2O (l)given that the standard enthalpy of formation of Na2SO4 (aq) is -1385 kJ/mol, and the standard enthalpies of formation of NaOH (s), H2SO4 (aq) and H2O (l) are -425 kJ/mol, -814 kJ/mol and -286 kJ/mol respectively.

answered Feb 3 in Chemical thermodynamics

1 answer 39 views

Calculate the standard enthalpy change for the following reaction, given the standard enthalpies of formation:2Fe (s) + 3Cl2 (g) → 2FeCl3 (s)ΔH°f(FeCl3) = -399.4 kJ/molΔH°f(Fe) = 0 kJ/molΔH°f(Cl2) = 0 kJ/mol

asked Feb 3 in Chemical thermodynamics

1 answer 9 views

How can the chemical engineer design a safe and cost-effective system for the production of cosmetics such as lotions and creams which align with regulatory standards and offer desirable shelf-life?

answered Jan 30 in Chemical engineering

1 answer 66 views

Calculate the heat energy required to sublime 25 grams of dry ice (CO2) at -78.5 °C, given the heat of sublimation for CO2 is 573 kJ/mol.

asked Jan 23 in ThermoChemistry

1 answer 55 views

Calculate the equilibrium constant (K) for the reaction between copper and silver ions in a galvanic cell at room temperature (25°C), given the following half-reactions and their respective reduction potentials:Cu2+ (aq) + 2e- → Cu (s) E°red = +0.34 VAg+ (aq) + e- → Ag (s) E°red = +0.80 VAlso, if the cell is constructed with a copper electrode and a silver electrode, which electrode will be the cathode and which will be the anode?

asked Jan 23 in ElectroChemistry

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