Recent activity by ZaraEnderby5

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What is the effect of temperature on the reaction rate and safety of the reaction between hydrogen peroxide and potassium iodide?

answered 3 days ago in Chemical kinetics

1 answer 22 views

How does the rate of reaction vary with changes in the concentration of reactants and products in a given reaction mechanism?

asked 3 days ago in Chemical kinetics

1 answer 21 views

What is the optimum reaction conditions to prepare 2,4,6-trinitrotoluene from toluene and nitric acid in terms of temperature, concentration, and reaction time to obtain a maximum yield of the product?

answered 3 days ago in Chemical synthesis

1 answer 23 views

What is the enthalpy of formation of magnesium oxide (MgO) given the enthalpy of formation of magnesium (Mg) is -601 kJ/mol and the enthalpy of formation of oxygen (O2) is 0 kJ/mol?

asked 6 days ago in ThermoChemistry

1 answer 15 views

How does the electronic and magnetic structure of topological materials influence their physical and chemical properties, and how can this knowledge be leveraged to design novel functional materials for future technological applications?

answered 6 days ago in Quantum Chemistry

1 answer 22 views

How will an increase in temperature affect the equilibrium constant of the following reaction at equilibrium: N2 (g) + 3H2 (g) ⇌ 2NH3 (g) Assume that the reaction takes place at constant pressure.

answered 6 days ago in Chemical equilibrium

1 answer 28 views

What is the coordination geometry of the metal ion in the active site of carbonic anhydrase enzyme and how does it affect the function of the enzyme?

asked 6 days ago in Coordination Chemistry

1 answer 22 views

How does the concentration of salt affect the formation of protein-protein complexes?

asked 6 days ago in BioChemistry

1 answer 23 views

What are the possible geometric isomers of the complex ion [Co(NH3)4Br2]+ and how can you distinguish between them experimentally?

answered Feb 18 in Coordination Chemistry

1 answer 25 views

How does the Calvin Cycle, a series of reactions occurring during photosynthesis, specifically use carbon fixation to convert atmospheric CO2 into organic molecules? What are the specific enzymes and biochemical pathways involved in the process?

answered Feb 18 in BioChemistry

1 answer 16 views

What effect does the addition of a catalyst have on the reaction rate of the decomposition of hydrogen peroxide in the presence of yeast?

asked Feb 17 in Chemical kinetics

1 answer 34 views

What are the different modes of action of various organic ultraviolet (UV) filters used in sunscreen lotions and how do they protect the skin from harmful UV radiation?

asked Feb 14 in PhotoChemistry

1 answer 46 views

What are the chemical constituents of crude oil and how do they interact with the environment during an oil spill?

answered Feb 12 in Environmental Chemistry

1 answer 23 views

How do the surface chemistry and mechanisms of corrosion differ from those of passivation, and what factors contribute to the formation of each process in metallic materials?

answered Feb 12 in Surface Chemistry

1 answer 10 views

How can the purity of a crude sample of a chemical be improved through the use of various purification techniques, such as distillation, chromatography or crystallization, and what factors should be considered in selecting the most appropriate method for the specific chemical being purified? Develop a process to achieve a 95% pure sample of the desired chemical.

asked Feb 10 in Chemical engineering

1 answer 35 views

How can the lack of funding for chemistry education be addressed to ensure that students have access to quality educational resources and equipment necessary for practical learning and knowledge retention?

answered Feb 7 in Chemical education

1 answer 34 views

How can chemists modify the chemical structure of existing antibiotics to overcome drug-resistant bacterial infections like MRSA (Methicillin-Resistant Staphylococcus Aureus)?

answered Feb 5 in Medicinal Chemistry

1 answer 58 views

What is the coordination chemistry behind the catalytic activity of the metalloenzyme carbonic anhydrase, and how does the geometry of the active site play a crucial role in its function?

asked Jan 31 in Coordination Chemistry

1 answer 86 views

What is the concentration of iron (II) ions in a water sample if the absorbance of the sample at a wavelength of 565 nm is measured to be 0.842 and it was found that a 1 cm cuvette contains 1.25 x 10^-4 moles of iron (II) ions? (The molar absorptivity of iron (II) ions at 565 nm is 1.9 x 10^4 L/mol cm).

asked Jan 30 in Analytical Chemistry

1 answer 12 views

An unknown compound is suspected to be a crystal structure of sodium chloride. Using X-ray crystallography techniques, determine if the compound is indeed a sodium chloride crystal structure and calculate the lattice parameters of the crystal.

answered Jan 22 in Physical Chemistry

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