Recent activity by FloridaOShan

1 answer 79 views

How does the polarity of solvent affect the rate of the photochemical reaction of benzophenone in different solvents such as ethanol, water, and toluene?

asked Feb 22 in PhotoChemistry

1 answer 72 views

What is the mechanism for the photochemical reaction of benzophenone with methanol?

answered Feb 22 in PhotoChemistry

1 answer 94 views

What is the effect of molecular weight and concentration of the polymer on the performance of water-based polymer coatings in terms of abrasion resistance?

asked Feb 22 in Polymer Chemistry

1 answer 76 views

What is the molecular geometry and bond angle of the carbon dioxide (CO2) molecule?

answered Feb 21 in Quantum Chemistry

1 answer 71 views

What is the heat of sublimation for dry ice (solid carbon dioxide) given that its enthalpy of fusion is 9.2 kJ/mol and its enthalpy of vaporization is 25.1 kJ/mol?

answered Feb 20 in ThermoChemistry

1 answer 82 views

What is the effect of temperature on the conductivity of ionic liquids?

asked Feb 20 in Physical Chemistry

1 answer 74 views

What is the effect of solvent polarity on the photophysical properties (fluorescence spectra, quantum yield, and lifetime) of a specific fluorescent dye (please specify the dye of interest) in photochemistry?

asked Feb 19 in PhotoChemistry

1 answer 91 views

How does the choice of exchange-correlation functional affect the accuracy of Density Functional Theory calculations in predicting the energy barriers of catalytic reactions on transition metal surfaces?

answered Feb 18 in Computational Chemistry

1 answer 78 views

How does the addition of biodegradable fillers affect the mechanical properties and environmental impact of polymer-based packaging materials?

asked Feb 17 in Polymer Chemistry

1 answer 95 views

How does the accumulation of a certain product affect the reaction rate of a chemical reaction? Provide specific examples and experimental data to support your answer.

asked Feb 17 in Chemical kinetics

1 answer 85 views

How can the use of fertilizers in sustainable agriculture be optimized to minimize environmental impact while still maintaining crop yields?

asked Feb 14 in Environmental Chemistry

1 answer 87 views

What surface modification technique can be utilized to enhance the biocompatibility of titanium implants for bone tissue engineering applications?

asked Feb 14 in Surface Chemistry

1 answer 121 views

How do metal ions in metalloenzymes and metalloproteins interact with the protein structure in order to achieve their enzymatic function?

answered Feb 13 in Coordination Chemistry

1 answer 155 views

How can we design a new drug molecule that selectively targets the immune cells responsible for the development of autoimmune diseases and avoids interfering with healthy cells?

asked Feb 12 in Medicinal Chemistry

1 answer 82 views

How can the synthesis and characterization of new materials be optimized to enhance the efficiency and durability of fuel cells?

asked Feb 11 in Materials Chemistry

1 answer 85 views

How can the mixing conditions, including temperature and mixing speed, be optimized in the production of water-based acrylic paints to ensure maximum pigment dispersion and a uniform coating on the surface?

answered Feb 10 in Chemical engineering

1 answer 71 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 101 views

Calculate the enthalpy of polymerization for the formation of polyethylene from its monomer, ethylene, given the following information:- The enthalpy of formation for ethylene is -84.7 kJ/mol.- The enthalpy of combustion for ethylene is -1410.1 kJ/mol.- The enthalpy of combustion for polyethylene is -5115.0 kJ/mol.- The molar mass of ethylene is 28.05 g/mol, and the molar mass of polyethylene is 28,000 g/mol (assume the polymer has an average degree of polymerization of 1000).

asked Jan 23 in ThermoChemistry

1 answer 94 views

Calculate the enthalpy change for the following chemical reaction:2H2(g) + O2(g) -> 2H2O(l) given the following bond enthalpy values:H-H bond energy = 436 kJ/mol O=O bond energy = 498 kJ/mol H-O bond energy = 464 kJ/mol

asked Jan 23 in Chemical thermodynamics

1 answer 92 views

Calculate the enthalpy change for the dissolution of 5.00 g of sodium hydroxide (NaOH) in 100.0 g of water (H2O). The temperature change was measured to be -3.45°C. Given that the specific heat of water is 4.18 J/g°C and the density of water is 1.00 g/mL. (Assume that the heat evolved from NaOH is absorbed by the water.)

asked Jan 23 in ThermoChemistry

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