Recent activity by RosalineRigg

1 answer 19 views

What is the most effective catalyst and reaction conditions for the synthesis of polypropylene from propylene monomer using a Ziegler-Natta catalyst?

asked 4 days ago in Chemical synthesis

1 answer 29 views

What is the coordination geometry of the complex formed between the lanthanide ion Europium (III) and the ligands 1,10-phenanthroline and pyridine, and what is the oxidation state of the Europium ion in this complex?

answered 6 days ago in Coordination Chemistry

1 answer 15 views

How does the coordination chemistry of metalloenzymes and metalloproteins affect their biological activity and function?

answered 6 days ago in Coordination Chemistry

1 answer 26 views

How does the chemical composition of polymer-based packaging materials affect their environmental impact and what are the most effective ways to reduce their negative impact on the environment?

answered Feb 18 in Polymer Chemistry

1 answer 23 views

How does the band gap of a material vary with respect to the change in lattice parameter using density functional theory (DFT) calculations?

asked Feb 17 in Computational Chemistry

1 answer 22 views

How does the addition of titanium affect the mechanical properties of nickel-based superalloys for use in high-temperature aerospace applications?

asked Feb 17 in Materials Chemistry

1 answer 17 views

How does the addition of specific elements affect the mechanical properties (such as strength and durability) of metal alloys used in aerospace applications, and how can this knowledge be used to optimize their performance?

asked Feb 17 in Materials Chemistry

1 answer 43 views

What is the role of ribosomes in RNA transcription and translation, and how does the structure of ribosomes contribute to its function in protein synthesis?

answered Feb 14 in BioChemistry

1 answer 24 views

What is the role of metal ions in metalloenzymes and metalloproteins, and how does their coordination chemistry contribute to the activity and function of these biomolecules in biological systems?

answered Feb 13 in Coordination Chemistry

1 answer 23 views

What is the effect of different ligands on the rate of substitution in coordination chemistry?

answered Feb 13 in Coordination Chemistry

1 answer 38 views

How does exposure to nitrogen oxides and sulfur dioxide in polluted air affect respiratory health in humans?

answered Feb 13 in Environmental Chemistry

1 answer 8 views

How do the photochemical properties of enantiomers differ and what are the implications of these differences in chemistry and in everyday life?

answered Feb 13 in PhotoChemistry

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?

answered Feb 12 in PhotoChemistry

1 answer 46 views

How can the process of drug development be optimized to efficiently target specific molecular pathways involved in the progression of cardiovascular diseases?

asked Feb 10 in Medicinal Chemistry

1 answer 29 views

How can the mechanical and thermal properties of different polymers be optimized for their use in 3D printing applications?

asked Feb 7 in Materials Chemistry

1 answer 32 views

How can technology be integrated into chemistry education to improve student learning outcomes and engagement? What are the specific challenges and barriers that need to be addressed in order to successfully incorporate technology in the chemistry classroom? What strategies can be employed to overcome these barriers and optimize the use of technology in chemistry education?

asked Feb 6 in Chemical education

1 answer 31 views

How can one determine whether a molecule exhibits geometrical or optical isomerism?

asked Feb 5 in Chemical bonding

1 answer 40 views

How can chemical and biological treatments be used to reduce the environmental impact of industrial waste disposal?

answered Feb 4 in Environmental Chemistry

1 answer 11 views

Consider the reaction: 2NOBr(g) <=> 2NO(g) + Br2(g), which has an equilibrium constant of 1.5 x 10^-5 at a certain temperature. If you start with 0.10 M of NOBr and let the reaction reach equilibrium, find the equilibrium concentrations of NOBr, NO, and Br2.

answered Feb 3 in Chemical equilibrium

1 answer 42 views

Calculate the standard enthalpy change for the fusion of 25 grams of ice at -10°C to liquid water at 20°C. The specific heat capacity of ice is 2.09 J/g°C, the specific heat capacity of water is 4.18 J/g°C, and the enthalpy of fusion of water is 6.01 kJ/mol.

asked Feb 3 in Chemical thermodynamics

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