Recent activity by JosetteVeneg

1 answer 13 views

How does the concentration of pollutants and the specific surface area of activated carbon affect the adsorption efficiency of pollutants on activated carbon?

asked 4 days ago in Surface Chemistry

1 answer 60 views

Dinitrogen tetroxide converts into nitrogen dioxide according to the following equation N2O4(g) ⇋ 2NO2(g). At equilibrium, the concentration of N2O4 is found to be 0.02 M and the concentration of NO2 is found to be 0.08 M. Calculate the equilibrium constant (Kc) for this reaction.

answered Feb 4 in Chemical equilibrium

1 answer 65 views

What is the concentration of a hydrochloric acid solution if 25 ml of the solution requires 18 ml of a 0.1 M sodium hydroxide solution for complete neutralization during a titration?

asked Jan 30 in Analytical Chemistry

1 answer 57 views

How can UV-Vis spectroscopy be used to identify the presence of specific functional groups in a compound, such as carbonyl or aromatic groups? Provide an example of a compound containing one of these functional groups and explain how its UV-Vis spectrum would differ from a compound without these functional groups.

answered Jan 29 in Analytical Chemistry

1 answer 43 views

Calculate the Gibbs free energy change for the electrochemical reaction where zinc metal (Zn) is oxidized by aqueous hydrogen ions (H+) to form aqueous zinc ions (Zn2+) and hydrogen gas (H2) at 298 K, given that the standard reduction potential of Zn2+/Zn is -0.76 V and the standard hydrogen electrode potential is 0 V.

answered Jan 23 in ElectroChemistry

1 answer 58 views

Calculate the enthalpy of desorption for the process of magnesium oxide (MgO) surface drying at a temperature of 500 K, given that the equilibrium pressure of water vapor above the dried MgO is 0.056 atm and the enthalpy of adsorption of water on MgO is -44.48 kJ/mol.

answered Jan 23 in ThermoChemistry

1 answer 38 views

A student wants to determine the maximum voltage and power output of a primary cell that consists of a zinc electrode in 1M Zn(NO3)2 solution and a silver electrode in 1M AgNO3 solution. The student knows the standard reduction potentials of Zn2+/Zn and Ag+/Ag to be -0.76V and +0.80V, respectively. Assuming the cell operates under standard conditions at 298K, what is the maximum voltage that the cell can generate and the maximum power output it can deliver?

asked Jan 22 in ElectroChemistry

1 answer 6 views

When assessing the effectiveness of problem-solving therapy, what are some of the strengths to consider?

asked Jan 20 in Psychology

1 answer 9 views

What is the identity status of an individual who has explored various options and has made a commitment?

asked Jan 17 in Psychology

1 answer 43 views

What is a group of organs that work together to do the same job?

answered Jan 6 in Science

1 answer 49 views

Through what do moving particles transfer thermal energy?

answered Jan 2 in Science

1 answer 59 views

Fossil fuels are made out of what two objects?

answered Dec 30, 2024 in Science

1 answer 38 views

What is the name for a change in a single nucleotide in dna?

answered Dec 28, 2024 in Science

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