Recent activity by SelmaBumgarn

1 answer 34 views

What is the effect of different wavelengths of light on the rate of a reaction between hydrogen peroxide and potassium iodide solution, and how does this relate to the activation energy of the reaction?

asked Feb 22 in Chemical kinetics

1 answer 25 views

How does the presence of a catalyst affect the reaction mechanism of the Diels-Alder reaction between cyclopentadiene and maleic anhydride, as revealed by quantum chemical calculations?

answered Feb 22 in Computational Chemistry

1 answer 13 views

What is the predicted geometry and polarity of the inorganic molecule XeF4?

asked Feb 22 in Inorganic Chemistry

1 answer 29 views

How does the photochemical behavior of luminescent materials vary with different excitation wavelengths?

asked Feb 22 in PhotoChemistry

1 answer 27 views

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

asked Feb 21 in Quantum Chemistry

1 answer 31 views

How does the regulation of the glycolytic pathway differ between aerobic and anaerobic conditions in mammalian cells, and what are the key enzymes and molecules involved in this regulation?

asked Feb 20 in BioChemistry

1 answer 34 views

What is the effect of different solvents with varying polarities on the rate of the photochemical reaction, and how does it correlate with the rate of energy transfer from the excited state of the photoactive molecule to the solvent molecules?

asked Feb 19 in PhotoChemistry

1 answer 22 views

What is the bond angle in a molecule of water (H2O) and how is it predicted based on the theory of valence shell electron pair repulsion (VSEPR) and the hybridization of the atoms involved?

asked Feb 18 in Chemical bonding

1 answer 45 views

What are the electronic properties of polyacetylene and how does the conjugation lengths in the polymer affect those properties?

answered Feb 14 in Polymer Chemistry

1 answer 57 views

What effect does increasing the concentration of a reaction product have on the rate of a reaction?

asked Feb 13 in Chemical kinetics

1 answer 57 views

In photochemistry, how do the photochemical properties of enantiomers differ and how does it affect the outcome of their photochemical reactions? Can you provide an example of a photochemical reaction that demonstrates these differences?

answered Feb 13 in PhotoChemistry

1 answer 115 views

What is the standard electrode potential of a copper electrode if it is combined with a zinc electrode in a galvanic cell, and the measured cell potential is 1.10 V at 298 K? Given: E°(Zn²⁺/Zn) = -0.76 V and E°(Cu²⁺/Cu) = 0.34 V.

answered Feb 13 in Physical Chemistry

1 answer 63 views

How does human activity contribute to the depletion of ozone in the atmosphere and what measures can be taken to prevent further damage?

answered Feb 13 in Environmental Chemistry

1 answer 83 views

How does eutrophication lead to the formation of harmful algal blooms in aquatic ecosystems, and what are the potential negative impacts on water quality and aquatic organisms?

answered Feb 13 in Environmental Chemistry

1 answer 112 views

What is the synthesis process of the coordination compound cisplatin and how is its structure characterized using modern analytical techniques?

answered Feb 12 in Coordination Chemistry

1 answer 78 views

How can the recovery of valuable metals such as gold, silver, and copper be optimized from electronic waste through a chemical engineering process that is environmentally sustainable and economically feasible?

answered Feb 10 in Chemical engineering

1 answer 73 views

Here's a chemistry problem related to Coordination chemistry of metalloenzymes and metalloproteins:What is the role of copper in the active site of the enzyme cytochrome c oxidase, and how does it facilitate the conversion of oxygen and protons into water? Provide a detailed explanation of the coordination chemistry of the copper sites involved in this process.

asked Feb 4 in Coordination Chemistry

1 answer 77 views

Calculate the standard enthalpy change for the phase transition of ice to water at 298 K, given that the heat of fusion of ice is 6.01 kJ/mol and the molar heat capacity of ice and water are 37.0 J/(mol*K) and 75.3 J/(mol*K), respectively.

answered Feb 3 in Chemical thermodynamics

1 answer 131 views

How do cells recognize and selectively degrade specific proteins within the cell? Describe the molecular mechanisms that underlie protein degradation and the various pathways involved.

answered Jan 31 in BioChemistry

1 answer 154 views

What functional groups are present in an unknown compound based on the infrared spectrum obtained from infrared spectroscopy analysis?

answered Jan 30 in Analytical Chemistry

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