Recent activity by LeoOverby677

1 answer 20 views

How does the presence of chiral centers in a molecule affect its photochemical properties, and what is the mechanism behind this effect?

answered 3 days ago in PhotoChemistry

1 answer 26 views

What is the change in enthalpy for the reaction: 2H2 + O2 → 2H2O, given the following thermochemical equations and their respective enthalpy changes: 2H2 + O2 → 2H2O, ΔH = -484 kJ/mol H2 + ½O2 → H2O, ΔH = -286 kJ/mol

answered 5 days ago in Chemical reactions

1 answer 18 views

What is the effect of changing the hydrophobic/hydrophilic balance of a surfactant on its foaming capabilities?

answered 5 days ago in Surface Chemistry

1 answer 19 views

What is the coordination number of the metal ion in the active site of the metalloenzyme carbonic anhydrase? And how does the coordination number affect the catalytic activity of the enzyme?

answered 6 days ago in Coordination Chemistry

1 answer 16 views

How does the coordination environment around the central metallic ion affect the electronic and optical properties of metalloporphyrins and metallophthalocyanines?

asked 6 days ago in Coordination Chemistry

1 answer 26 views

How does the chemical structure of photovoltaic materials affect their photochemical properties and efficiency in converting light energy into electrical energy?

asked Feb 18 in PhotoChemistry

1 answer 27 views

How does the addition of a catalyst affect the energy barrier of a reaction mechanism and ultimately the rate of reaction, as predicted by density functional theory calculations?

answered Feb 17 in Computational Chemistry

1 answer 22 views

How can we use polymer-based drug delivery systems to improve the efficacy and safety of cancer chemotherapy drugs?

asked Feb 14 in Polymer Chemistry

1 answer 32 views

What are the key differences between ionic, covalent, and metallic solids? Using specific examples, explain how you can identify the type of inorganic solid that a substance belongs to based on its physical properties and bonding characteristics.

asked Feb 13 in Inorganic Chemistry

1 answer 45 views

What innovative approaches can be taken in developing new treatments for skin diseases using principles of medicinal chemistry?

answered Feb 13 in Medicinal Chemistry

1 answer 37 views

What is the effect of increasing the concentration of reactants on the rate of reaction between potassium iodide and lead nitrate in an aqueous solution?

answered Feb 13 in Chemical kinetics

1 answer 31 views

What are the methods for improving the efficiency of light emission in polymer-based optical materials?

asked Feb 13 in Polymer Chemistry

1 answer 59 views

How can the stability of a colloidal suspension be affected by changing the ionic strength of the solution?

answered Feb 10 in Physical Chemistry

1 answer 39 views

How can the depletion of ozone in the atmosphere affect the concentration of harmful UV radiation reaching the Earth's surface, and what can be done to prevent further ozone depletion?

answered Feb 6 in Environmental Chemistry

1 answer 25 views

How can chemistry teachers provide adequate support for students with learning disabilities to ensure they have equal opportunities to succeed in the subject?

answered Feb 5 in Chemical education

1 answer 27 views

How can chemistry-related extracurricular activities be made more widely available to students in areas where resources are limited, in order to enhance their learning and interest in the subject?

asked Feb 5 in Chemical education

1 answer 43 views

Determine the molecular geometry and bond angles for the molecule CF4 using the VSEPR theory.

answered Feb 4 in Quantum Chemistry

1 answer 51 views

Design a distillation column to separate a mixture that contains 40% ethanol and 60% water by weight with a desired ethanol purity of 95%. The feed rate of the mixture is 100 kg/hr and the reflux ratio is 3:1. Determine the number of theoretical plates required and the height of the column. Assume that the total condenser and reboiler are both at 100°C and that the distillate leaving the column is 90% liquid and 10% vapor.

asked Feb 4 in Chemical engineering

1 answer 10 views

Consider the redox reaction 2Fe^2+(aq) + H2O2(aq) + 2H^+(aq) ⟷ 2Fe^3+(aq) + 2H2O(l). If a catalyst is added to the reaction mixture at equilibrium, will the concentration of Fe^3+ increase, decrease or remain the same? Justify your answer mathematically.

asked Feb 3 in Chemical equilibrium

1 answer 80 views

What are the specific photochemical properties responsible for the bioluminescence exhibited by organisms such as fireflies, jellyfish, and bacteria, and how can this knowledge be applied in the synthesis of new luminescent molecules for various applications?

asked Jan 31 in PhotoChemistry

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