Recent activity by IsabellaOcto

1 answer 75 views

What is the relationship between the strength of intermolecular forces and the boiling point of a substance in organic molecules with various functional groups, and how can this relationship be used to predict the boiling points of different compounds?

answered Feb 24 in Chemical bonding

1 answer 77 views

How does the photochemical reaction rate of a given substance change with an increase in temperature, and what is the relationship between temperature and activation energy of the reaction?

asked Feb 22 in PhotoChemistry

1 answer 85 views

What is the effect of varying the cross-linking density on the water absorbency and swelling behavior of polymer-based superabsorbent materials?

asked Feb 19 in Polymer Chemistry

1 answer 70 views

How does the coordination number of the central metal ion affect the electronic structure and spectroscopic properties of metalloporphyrins and metallophthalocyanines? Provide specific examples and experimental evidence to support your answer.

answered Feb 19 in Coordination Chemistry

1 answer 72 views

What is the balanced chemical equation for the decomposition of calcium carbonate (CaCO3) when heated?

asked Feb 17 in Chemical reactions

1 answer 78 views

What is the balanced chemical equation for the combustion of methane gas (CH4) in oxygen gas (O2) during a redox reaction?

asked Feb 17 in Chemical reactions

1 answer 84 views

How does the activity of a catalyst influence the reaction rate of the decomposition of hydrogen peroxide?

asked Feb 17 in Chemical kinetics

1 answer 162 views

What is the role of cholesterol in maintaining the fluidity and permeability of the cell membrane?

asked Feb 12 in BioChemistry

1 answer 124 views

How can the stability of an emulsion be affected by factors such as temperature, pH, and the addition of emulsifiers, and what are the mechanisms behind these effects?

asked Feb 10 in Surface Chemistry

1 answer 92 views

How can the electrical conductivity of conductive polymers be improved for use in flexible electronics?

answered Feb 7 in Materials Chemistry

1 answer 81 views

How can the coordination chemistry principles of chelation therapy be applied to treat heavy metal poisoning? Provide a detailed explanation of the chelation process including the types of ligands used, the formation of stable complexes, and the mechanism of removing the toxic metals from the body.

answered Feb 6 in Coordination Chemistry

1 answer 117 views

Determine the enthalpy of desorption for carbon dioxide from activated charcoal at 25°C. Given: the equilibrium pressure of CO2 is 0.1 atm and the mass of charcoal used is 2.5 g.

answered Feb 4 in ThermoChemistry

1 answer 150 views

How does changing the pH of a redox reaction involving copper and zinc affect the equilibrium position and which ion, Cu2+ or Zn2+, is favored?

asked Feb 3 in Chemical equilibrium

1 answer 95 views

How does changing the concentration of reactants and products affect the reaction rate of a reversible chemical reaction at equilibrium?

answered Feb 3 in Chemical kinetics

1 answer 146 views

How do changes in the secondary and tertiary structure of a protein affect its function? Provide specific examples.

asked Jan 31 in BioChemistry

1 answer 82 views

Calculate the equilibrium constant at 25°C for the reaction: CO(g) + 3H2(g) ⇌ CH4(g) + H2O(g) If at equilibrium, the concentration of CO is 0.10 M, H2 is 0.20 M, CH4 is 0.015 M and H2O is 0.035 M.

asked Jan 23 in Chemical equilibrium

1 answer 115 views

Calculate the current density in an electrochemical cell if a current of 2.5 A is passed through a copper electrode with a surface area of 25 cm² and a silver electrode with a surface area of 10 cm² for 3 hours. The half-cell potentials of copper and silver electrodes are +0.34 V and +0.80 V, respectively, and the molar concentrations of copper and silver ions in the electrolyte are 0.5 M and 1 M, respectively.

asked Jan 23 in ElectroChemistry

1 answer 78 views

Calculate the bond order and bond length of the nitric oxide molecule (NO).

answered Jan 23 in Inorganic Chemistry

1 answer 81 views

Calculate the bond dissociation energy (in kJ/mol) of the C-H bond in methane (CH4) using experimental data.

asked Jan 23 in ThermoChemistry

1 answer 145 views

A chemistry student is given a sample of an unknown salt consisting of a mixture of two compounds. The student is asked to determine the percentage composition of each compound in the salt using mass balance calculations. The total mass of the sample is 10 grams, and after performing careful analysis, the student obtains the following data: One compound has a molar mass of 80 g/mol and comprises 60% of the total mass of the salt. The other compound has a molar mass of 120 g/mol and comprises 40% of the total mass of the salt. What are the percentage compositions of each compound in the salt?

answered Jan 22 in Analytical Chemistry

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