Recent activity by KellieDefazi

1 answer 37 views

What are the effects of temperature and pressure on the phase transition of liquid crystals from nematic to isotropic phase?

answered Feb 22 in Physical Chemistry

1 answer 25 views

What is the most energy-efficient and cost-effective process for producing a high volume of hydrogen gas with minimal environmental impact for industrial applications like fuel cell technology?

asked Feb 21 in Chemical engineering

1 answer 24 views

What is the effect of different metal ions on the electrochemical properties of metalloporphyrins and metallophthalocyanines? Compare and contrast the behavior of two different metalloporphyrins or metallophthalocyanines containing different metal ions.

answered Feb 20 in Coordination Chemistry

1 answer 27 views

How does the degree of polymer chain branching affect the crystalline structure and morphology of polymers?

asked Feb 19 in Polymer Chemistry

1 answer 29 views

What is the effect of different degrees of crosslinking on the mechanical properties of a polymer utilized in biomedical applications?

answered Feb 19 in Materials Chemistry

1 answer 36 views

What is the bond length between two hydrogen atoms in a hydrogen molecule (H2)? Given the atomic radius of hydrogen as 37 pm and the bond energy of H2 as 436 kJ/mol.

asked Feb 18 in Chemical bonding

1 answer 37 views

How does the atomic structure of metal-organic frameworks affect the adsorption of gases, and what computational methods can be used to accurately model and predict their behavior?

answered Feb 17 in Computational Chemistry

1 answer 27 views

How does the addition of a catalyst affect the reaction rate of the decomposition reaction of hydrogen peroxide?

answered Feb 17 in Chemical kinetics

1 answer 69 views

How does limited exposure to current research in chemistry affect the motivation and career decisions of undergraduate chemistry students?

answered Feb 13 in Chemical education

1 answer 49 views

What is the coordination geometry and metal-ligand bonding in the metallofullerene La2@C80? How does it differ from the bonding in LaC2@C80?

answered Feb 13 in Coordination Chemistry

1 answer 31 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 33 views

How can the photochromic properties of a material be optimized for efficient use in photochromic lenses or in smart windows technology?

asked Feb 10 in PhotoChemistry

1 answer 36 views

How can molecular dynamics simulations be used to identify the specific interactions between DNA and protein molecules, and what are the potential applications of this information in the field of drug discovery and development?

answered Feb 5 in Computational Chemistry

1 answer 89 views

What is the predicted bond strength of methane (CH4) using the concept of bond dissociation energy? Compare its bond strength with that of carbon monoxide (CO) and ammonia (NH3).

asked Jan 31 in Chemical bonding

1 answer 86 views

What is the most stable conformation of 1,2-dichloroethane and how does it affect the molecule's dipole moment? Use computational chemistry and molecular modeling to calculate the energy of different conformations and analyze their dipole moments.

answered Jan 31 in Physical Chemistry

1 answer 74 views

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

asked Jan 31 in Computational Chemistry

1 answer 116 views

What is the role of aminotransferase enzymes in amino acid metabolism and biosynthesis, and how do changes in their activity affect the metabolic pathways involved in protein synthesis and degradation?

answered Jan 31 in BioChemistry

1 answer 66 views

Calculate the heat required to sublime 10 grams of dry ice (carbon dioxide) at its melting point (-78.5°C) and convert it to a gas at its boiling point (-57°C). The heat of sublimation of carbon dioxide is 25.2 kJ/mol.

asked Jan 23 in ThermoChemistry

1 answer 20 views

A voltaic cell consists of a standard hydrogen electrode and a copper electrode in a solution of copper(II) sulfate. The measured cell potential is 0.78 V at 25°C. If the concentration of copper(II) sulfate is 0.1 M, what is the resistance of the electrochemical cell?

answered Jan 22 in ElectroChemistry

1 answer 113 views

A chemistry student wants to determine the specific heat capacity of a metal sample. The student adds 50 g of the metal sample to 200 g of water at 25°C in a calorimeter. The temperature of the water rises from 25°C to 38°C. Assume the specific heat capacity of water is 4.184 J/g°C. What is the specific heat capacity of the metal sample?

answered Jan 22 in ThermoChemistry

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