Recent activity by HazelAvelar

1 answer 29 views

What are the photochemical properties of the photochromic material used in transition lenses, and how do they cause the lenses to darken when exposed to sunlight, and then lighten when the sunlight is removed?

answered 4 days ago in PhotoChemistry

1 answer 22 views

How does the particle size of a colloidal solution affect its color intensity and stability?

answered 4 days ago in Physical Chemistry

1 answer 22 views

What is the optimal temperature and pressure conditions for the synthesis of polyethylene oxide with a desired molecular weight using ethylene oxide monomer as the raw material?

answered 4 days ago in Chemical synthesis

1 answer 22 views

What is the most effective metal catalyst and reaction conditions for selective oxidation of methane to methanol on metal surfaces?

answered 4 days ago in Surface Chemistry

1 answer 23 views

How does the molecular weight and composition of a polymer affect its properties for use in 3D printing?

answered 4 days ago in Materials Chemistry

1 answer 23 views

How does the ligand environment of a transition metal complex affect its photochemical properties?

asked 5 days ago in PhotoChemistry

1 answer 22 views

What is the effect of temperature on the critical micelle concentration (CMC) of a surfactant and how does it relate to the physical properties of the micelles formed?

answered 6 days ago in Surface Chemistry

1 answer 28 views

What is the effect of substrate concentration on the rate of enzyme-catalyzed reactions, and how does the presence of an inhibitor (competitive or non-competitive) affect this relationship?

answered 6 days ago in BioChemistry

1 answer 29 views

What is the effect of increasing the temperature from 25°C to 50°C on the equilibrium constant of the following exothermic reaction?N₂(g) + 3H₂(g) ⇌ 2NH₃(g) + heat

answered 6 days ago in Chemical equilibrium

1 answer 20 views

What is the effect of different light intensities (measured in lux) on the reaction rate of the bleaching of a food coloring solution using hydrogen peroxide and potassium iodide as catalysts?

answered 6 days ago in Chemical kinetics

1 answer 30 views

What is the dipole moment of carbon dioxide and how does it differ from the dipole moment of water? Use your knowledge of the molecular geometry and bond polarity of these molecules to explain their dipole moments.

answered 6 days ago in Chemical bonding

1 answer 37 views

Identify the type of solid (ionic, covalent, or metallic) for the compound ZnO. Provide a detailed explanation and evidence to support your answer.

answered Feb 18 in Inorganic Chemistry

1 answer 27 views

How does the choice of precursor materials affect the size and shape of nanoparticles synthesized using chemical precipitation methods?

asked Feb 18 in Materials Chemistry

1 answer 23 views

How does the binding energy of a transition metal complex change as the metal's oxidation state increases, as determined by ab initio calculations?

asked Feb 17 in Computational Chemistry

1 answer 27 views

How does the addition of dopant atoms affect the electronic properties of graphene? And how can these properties be harnessed for the development of more efficient electronic devices?

asked Feb 17 in Materials Chemistry

1 answer 20 views

How does the addition of different metal oxides affect the properties of ceramics used for high-temperature applications?

asked Feb 17 in Materials Chemistry

1 answer 24 views

How does the concentration and structure of surfactants affect the surface tension of water?

asked Feb 17 in Surface Chemistry

1 answer 8 views

How can the prediction of chemical reactivity and selectivity using quantum chemistry be applied to optimize drug design and synthesis?

asked Feb 10 in Quantum Chemistry

1 answer 32 views

How can chemistry students effectively network and find opportunities for internships and job opportunities, given the limited availability of such opportunities in the field?

asked Feb 4 in Chemical education

1 answer 55 views

Calculate the standard electrode potential for the redox reaction between silver and copper ions at 298K, given that the reduction potential for the half-reaction Ag+ + e- → Ag is +0.80 V and the reduction potential for the half-reaction Cu2+ + 2e- → Cu is +0.34 V.

asked Feb 3 in Chemical thermodynamics

Categories