Recent activity by CathrynMacMa

1 answer 18 views

How does the polarity of a solvent affect the solubility of a substance? Provide a detailed explanation with examples.

asked 3 days ago in Chemical bonding

1 answer 20 views

How does the size, shape, and surface characteristics of mesogenic particles affect the phase behavior of liquid crystals in Monte Carlo simulations?

answered 3 days ago in Computational Chemistry

1 answer 30 views

What is the most efficient protecting group strategy for selectively protecting the primary alcohol in a mixture of primary and secondary alcohols during a synthesis reaction?

asked 3 days ago in Organic Chemistry

1 answer 24 views

How would changing the pH affect the formation of a complex ion between iron (III) and thiocyanate ions? Provide a balanced equation that shows the formation of the complex ion and explain how the equilibrium constant would be impacted by changes in pH.

answered 5 days ago in Chemical equilibrium

1 answer 25 views

What is the enthalpy of combustion of ethanol (C2H5OH) if the standard enthalpy change of combustion of ethanol is -1367 kJ/mol and the heat of formation of water (H2O) is -285.8 kJ/mol?

asked 5 days ago in ThermoChemistry

1 answer 24 views

What is the bond order of the nitrogen molecule (N2) in its ground state?

answered Feb 18 in Chemical bonding

1 answer 32 views

What is the mechanism of the acid-catalyzed cleavage of an ether and how does it differ from the base-catalyzed cleavage of an ether? Provide a step-by-step explanation of the mechanism using a specific example.

asked Feb 17 in Organic Chemistry

1 answer 31 views

How do ribonucleoprotein complexes (RNPs) recognize specific sequences on pre-mRNA during RNA splicing, and what role do metal ions play in mediating this recognition process?

asked Feb 14 in BioChemistry

1 answer 38 views

How do the magnetic properties of different materials affect their use in data storage applications?

asked Feb 13 in Materials Chemistry

1 answer 44 views

What is the hybridization of the central atom in SO2 molecule?

answered Feb 13 in Chemical bonding

1 answer 45 views

One possible problem is:What are the common regulatory enzymes in glycolysis and gluconeogenesis pathways, and how do they regulate the reciprocal flux between these two pathways? Use chemical structures and equations to illustrate your answer.

answered Feb 13 in BioChemistry

1 answer 34 views

How does cholesterol affect the fluidity of cellular membranes and why is this important for cellular function?

answered Feb 12 in BioChemistry

1 answer 28 views

What is the molecular composition of CFCs, and how do they contribute to the depletion of the ozone layer? Additionally, what measures can be taken to decrease the usage and impact of CFCs on the ozone layer?

asked Feb 12 in Environmental Chemistry

1 answer 30 views

How can the environmental impact of industrial waste disposal be minimized using chemical processes and technologies?

asked Feb 7 in Environmental Chemistry

1 answer 26 views

How can the design of the production system for surfactants be optimized to minimize energy consumption and environmental impact, while maintaining high product yield and quality?

asked Feb 7 in Chemical engineering

1 answer 47 views

How can education in environmental chemistry be improved to help students better understand the impact their chemical experiments and research may have on the environment?

asked Feb 5 in Chemical education

1 answer 58 views

Calculate the polarization of a copper-silver galvanic cell in which the concentration of copper ions is 0.5 M, the concentration of silver ions is 0.1 M, and the cell is operating at a temperature of 25°C. The potential difference of the cell is measured to be 0.75 V.

asked Feb 3 in ElectroChemistry

1 answer 44 views

How does changing the reactant concentrations in a chemical reaction affect the rate of reaction and the reaction stoichiometry? Provide experimental evidence to support your answer using the reaction between potassium iodide and hydrogen peroxide.

answered Feb 3 in Chemical kinetics

1 answer 44 views

Calculate the heat of crystallization for the solidification of 25 grams of a solution containing 10% sucrose (C12H22O11) by mass. The enthalpy of solution for sucrose in water at a given temperature is -5.73 kJ/mol. The molar mass of sucrose is 342.3 g/mol. Assuming that the solution completely solidifies upon cooling, determine the energy released or absorbed in the process.

answered Jan 23 in ThermoChemistry

1 answer 52 views

Calculate the entropy change for the following chemical reaction at 25 °C: 2H2(g) + O2(g) → 2H2O(l) Given that the standard molar entropy of H2(g), O2(g), and H2O(l) are 130.68 J/mol·K, 205.03 J/mol·K and 70.01 J/mol·K respectively.

answered Jan 23 in Chemical thermodynamics

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