Recent activity by FrancineCron

1 answer 38 views

What is the rate of reaction for the decompositions of hydrogen peroxide in the presence of a catalyst, and how does the rate change when the concentration of hydrogen peroxide or the temperature is varied?

asked Feb 22 in Physical Chemistry

1 answer 48 views

How does the presence of reaction intermediates affect the rate of a chemical reaction and what experimental techniques can be used to investigate this effect?

answered Feb 22 in Chemical kinetics

1 answer 30 views

How does the microstructure of superconducting materials affect their critical temperature and critical current density?

asked Feb 20 in Materials Chemistry

1 answer 38 views

What is the critical micelle concentration (CMC) of sodium dodecyl sulfate (SDS) in water at 25°C? Include the necessary equations and explain the significance of the CMC in micelle formation.

asked Feb 19 in Surface Chemistry

1 answer 38 views

What is the coordination geometry of the active site in the metalloprotein hemoglobin? Explain how this geometry allows for the selective binding and release of oxygen in the blood.

answered Feb 19 in Coordination Chemistry

1 answer 36 views

What is the influence of the chemical structure of dyes and pigments on their photochemical properties and how can this knowledge be applied to enhance their performance in various applications?

answered Feb 18 in PhotoChemistry

1 answer 44 views

What would be the balanced chemical equation for the reaction between sodium hydroxide and hydrochloric acid, and what are the products formed in a double replacement reaction?

answered Feb 17 in Chemical reactions

1 answer 26 views

What are the effects of temperature and molecular composition on the electro-optical properties of liquid crystal molecules, and how can this knowledge be applied in the development and optimization of modern display technologies?

asked Feb 17 in Materials Chemistry

1 answer 16 views

What is the specific chemical structure of RNA and how do the base pairings differ from DNA? How does the structure of RNA contribute to its function within the cell?

answered Feb 14 in BioChemistry

1 answer 53 views

What is the effect of heavy metals such as lead and mercury on the behavior of aquatic organisms, and how do these contaminants accumulate in the food web?

asked Feb 13 in Environmental Chemistry

1 answer 63 views

What mass of silver chloride (AgCl) can be produced from the reaction between 50 mL of 0.1 M silver nitrate (AgNO3) and 100 mL of 0.2 M hydrochloric acid (HCl)? Also, determine which reactant is in excess and by how much.

answered Feb 13 in Chemical reactions

1 answer 29 views

How can the recovery of valuable metals such as gold, silver, copper, and platinum be efficiently designed and optimized from electronic waste materials?

answered Feb 10 in Chemical engineering

1 answer 37 views

How can the production of polyethylene oxide from ethylene oxide monomer be optimized in terms of yield and purity, considering the reaction conditions such as temperature, pressure, catalyst selection, and additives?

answered Feb 10 in Chemical synthesis

1 answer 78 views

Consider the synthesis of ibuprofen from 2-methylpropylbenzene and carbon dioxide, using a series of reactions. As a chemistry student, how would you design an experimental process to isolate and purify ibuprofen from the reaction mixture? Include details on the specific equipment and techniques that can be used, as well as potential challenges and solutions.

answered Feb 3 in Chemical synthesis

1 answer 68 views

Can the chemical modification of a polymer affect its optical properties and if so, how can we design a polymer with unique optical properties for use in advanced optical materials?

asked Feb 3 in Polymer Chemistry

1 answer 101 views

What is the oxidation state of nitrogen in NH4NO3?

answered Jan 31 in Chemical reactions

1 answer 121 views

What is the concentration of iron(II) sulfate in a sample of water taken from a lake, using spectrophotometry with a known molar absorptivity of 11,300 L/mol*cm, if the absorbance of the sample is measured to be 0.423 at a wavelength of 510 nm?

answered Jan 30 in Analytical Chemistry

1 answer 93 views

How does the Meaning-Making Theory explain end-of-life experiences?

asked Jan 20 in Psychology

1 answer 42 views

How does the humanistic theory differ from other schools of thought?

asked Jan 20 in Psychology

1 answer 87 views

Please evaluate the social influence techniques.

answered Jan 20 in Psychology

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