Recent activity by PearlEaston

1 answer 77 views

How do the photochemical properties of transition metal complexes differ from those of organic compounds, and what are the factors that affect these properties?

answered Feb 22 in PhotoChemistry

1 answer 72 views

How do the photochemical properties of lanthanide complexes differ from other transition metal complexes? Provide a detailed explanation of the factors that contribute to these differences and their potential applications in photochemical processes.

answered Feb 22 in PhotoChemistry

1 answer 83 views

How does the particle size and shape of nanomaterials affect their catalytic activity in specific chemical reactions?

answered Feb 22 in Materials Chemistry

1 answer 77 views

What is the mechanism governing energy transfer between molecules in a gas-phase reaction at varying temperatures and pressures? Additionally, what is the relationship between the reaction kinetics and molecular dynamics of the system?

asked Feb 20 in Quantum Chemistry

1 answer 79 views

How do the mechanical, and biological properties of collagen-based biomaterials vary with changes in the collagen concentration and crosslinking density for use in tissue engineering applications?

asked Feb 20 in Materials Chemistry

1 answer 68 views

What is the bond dissociation energy of a H-H bond in H2 molecule in kJ/mol, given that the bond length of H-H is 74 pm and the energy required to dissociate the bond is 432 kJ/mol?

asked Feb 18 in Chemical bonding

1 answer 86 views

What is the structure of the active site in cytochrome c oxidase, a metalloenzyme involved in cellular respiration, and how does it facilitate the reduction of oxygen to water?

answered Feb 17 in Coordination Chemistry

1 answer 82 views

How do different surfactants in cleaners and detergents affect the surface tension of water?

asked Feb 17 in Surface Chemistry

1 answer 127 views

How does the identity and concentration of a ligand affect ligand substitution reactions in coordination chemistry? Provide specific examples to illustrate your answer.

answered Feb 13 in Coordination Chemistry

1 answer 120 views

What can be done to improve the availability of chemistry textbooks and resources for students in underprivileged and rural areas who may not have access to adequate educational materials?

asked Feb 13 in Chemical education

1 answer 124 views

How does the drug ibuprofen alleviate pain and reduce inflammation in the body at the molecular level?

asked Feb 13 in Medicinal Chemistry

1 answer 124 views

What is the reaction rate constant for the reaction A + B → C if the initial concentration of A is 0.2 M, the initial concentration of B is 0.3 M, the initial rate of reaction is 0.1 M/s, and the reaction is of first order with respect to both A and B?

answered Feb 13 in Chemical reactions

1 answer 102 views

How can we design a drug that targets and inhibits the replication of the Zika virus, while not affecting healthy human cells?

asked Feb 12 in Medicinal Chemistry

1 answer 82 views

How can the lack of emphasis on safety protocols in chemistry labs affect the physical and mental well-being of students, and what can be done to address and prevent any potential hazards?

asked Feb 7 in Chemical education

1 answer 74 views

How can the environmental impact of polymer-based packaging materials be reduced using sustainable and biodegradable alternatives?

asked Feb 7 in Polymer Chemistry

1 answer 76 views

How can the efficiency of the system for the production of hydrogen fuel in a chemical engineering plant be increased by reducing energy losses and optimizing the reaction conditions?

answered Feb 7 in Chemical engineering

1 answer 98 views

How can metabolomics and systems biology be used to identify metabolic pathways involved in drug metabolism and toxicity in the human body?

answered Feb 5 in BioChemistry

1 answer 88 views

How can chemistry teachers provide effective support to students with learning disabilities during laboratory experiments?

answered Feb 5 in Chemical education

1 answer 139 views

Determine the standard enthalpy of formation of methane (CH4) given the following information: The standard enthalpy of formation of CO2 and H2O are -393.5 kJ/mol and -285.8 kJ/mol, respectively. The combustion of 0.50 g of methane in a bomb calorimeter resulted in a 1.20°C temperature increase of the surrounding water. The heat capacity of the bomb calorimeter is 5.85 kJ/°C.

asked Feb 4 in Chemical thermodynamics

1 answer 155 views

Calculate the standard enthalpy change for the neutralization reaction between 50.0 mL of 0.100 M hydrochloric acid and 75.0 mL of 0.080 M sodium hydroxide. Given: the specific heat capacity of the solution is 4.18 J/g°C and the density of the solution is 1.00 g/mL. The balanced chemical equation for the reaction is HCl (aq) + NaOH (aq) → NaCl (aq) + H2O (l).

asked Feb 3 in Chemical thermodynamics

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