Recent activity by ErnestinaMus

1 answer 22 views

How does the rate of the chemical reaction between hydrogen and oxygen change as the pressure is increased from 1 atm to 5 atm at a constant temperature of 25°C?

answered Feb 22 in Chemical kinetics

1 answer 29 views

What is the role of metal ions in the catalytic activity of the metalloenzyme carbonic anhydrase, and how do the coordination chemistry and geometry of the metal ion influence this activity?

asked Feb 20 in Coordination Chemistry

1 answer 39 views

How does the formation of hydrogen bonding affect the self-assembly of amphiphilic molecules in supramolecular chemistry?

answered Feb 20 in Physical Chemistry

1 answer 32 views

What is the effect of pH on the rate of reaction between hydrochloric acid and magnesium ribbon?

answered Feb 19 in Chemical kinetics

1 answer 36 views

What is the effect of different monomer ratios on the physical properties of a polymer?

answered Feb 19 in Physical Chemistry

1 answer 30 views

What is the balanced chemical equation, including state symbols, for the complete combustion of methane (CH4) in oxygen (O2)?

asked Feb 17 in Chemical reactions

1 answer 47 views

How does the supramolecular assembly affect the photochemical properties of a dye molecule? Provide experimental evidence and theoretical explanations for your answer.

answered Feb 17 in PhotoChemistry

1 answer 39 views

What is the effect of strain on the electronic and optical properties of graphene? What are the changes in the energy band structure and excitonic properties of strained graphene compared to the unstrained graphene?

asked Feb 14 in Quantum Chemistry

1 answer 40 views

How do proton pump inhibitors (PPIs) interact with clopidogrel (an antiplatelet drug) at the molecular level and how does this interaction affect the overall effectiveness of clopidogrel therapy?

answered Feb 14 in Medicinal Chemistry

1 answer 93 views

How can the surface properties of biomaterials be modified to improve their biocompatibility and reduce the risk of rejection by the human body's immune system?

asked Feb 11 in Surface Chemistry

1 answer 52 views

How can the chemical composition and molecular structure of liquid crystals be manipulated to improve their properties and optimize their use in display technology?

answered Feb 6 in Materials Chemistry

1 answer 67 views

Calculate the standard enthalpy change for the vaporization of 25.0 grams of water at 100°C, given that the molar enthalpy of vaporization of water is 40.7 kJ/mol.

asked Feb 3 in Chemical thermodynamics

1 answer 75 views

What is the effect of changing the concentration of reactants on the rate of reaction and the corresponding safety hazards in a given chemical reaction?

asked Feb 3 in Chemical kinetics

1 answer 135 views

What functional group(s) are present in a given unknown compound using infrared spectroscopy and how can they be identified through characteristic infrared absorption peaks?

answered Jan 30 in Analytical Chemistry

1 answer 77 views

Calculate the anodic Tafel slope (in mV/decade) for the corrosion of iron in a solution containing 0.1 M HCl, given that the corrosion current density is 2.5 mA/cm2 and the exchange current density is 0.25 mA/cm2. Assume T = 25°C and the activation energy of the reaction is 40 kJ/mol.

asked Jan 23 in ElectroChemistry

1 answer 80 views

A chemistry student needs to determine the concentration of iron (III) ions in a water sample using spectrophotometry. The water sample contains an unknown amount of iron (III) ions that need to be quantified with a high degree of accuracy. The student has access to a spectrophotometer and an iron (III) ion standard solution to be used as a reference for the analysis. What is the concentration of iron (III) ions in the water sample?

asked Jan 22 in Analytical Chemistry

1 answer 97 views

Who is known for the ecological systems theory of development?

asked Jan 20 in Psychology

1 answer 99 views

What is selective optimisation with compensation?

asked Jan 20 in Psychology

1 answer 114 views

Why was the term 'dyke' reclaimed by the lesbian community?

asked Jan 20 in Psychology

1 answer 53 views

Why is the split-brain experiment important?

asked Jan 20 in Psychology

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