Recent activity by MathiasHemma

1 answer 30 views

Consider a cell consisting of a zinc electrode in 1.0 M ZnSO4 solution and a copper electrode in 1.0 M CuSO4 solution. Calculate the standard cell potential of the cell at 25°C, given that the standard electrode potential for the zinc electrode is -0.76 V and for the copper electrode is +0.34 V.

asked 2 days ago in ElectroChemistry

1 answer 54 views

What is the difference between alkenes and alkynes in terms of their chemical structure and properties?

answered 6 days ago in Organic Chemistry

1 answer 76 views

Design a supramolecular assembly using non-covalent interactions that could potentially be used for drug delivery and explain how it can be achieved through self-assembly techniques in physical chemistry.

answered 6 days ago in Physical Chemistry

1 answer 67 views

What is the concentration of copper (II) ions in a given sample of wastewater using the polarographic method, given the obtained peak current is 2.5 mA and the standard potential of Cu2+ → Cu transformation is -0.34 V, working at a pH of 4.5 with a scan rate of 50 mV/s?

answered 6 days ago in Analytical Chemistry

1 answer 48 views

Calculate the enthalpy change of desorption of water from a graphite surface if the initial pressure of water is 10 torr and the final pressure is 1 torr at a constant temperature of 300 K. The surface area of the graphite is 50 cm² and the heat of adsorption of water on the surface is -40 kJ/mol.

asked Jan 23 in ThermoChemistry

1 answer 29 views

When treating substance use disorders, what is motivational interviewing?

asked Jan 17 in Psychology

1 answer 19 views

According to the Elaboration Likelihood Model, what factors affect the amount of elaboration in the message processing?

asked Jan 17 in Psychology

1 answer 18 views

What is the difference between a static and dynamic approach to discursive psychology?

asked Jan 16 in Psychology

1 answer 4 views

According to Festinger, why do individuals seek out information?

answered Jan 16 in Psychology

1 answer 6 views

Who developed the cognitive model of obsessive-compulsive disorder?

answered Jan 15 in Psychology

1 answer 21 views

What is the triarchic theory of intelligence?

asked Jan 13 in Psychology

1 answer 8 views

What term is used to describe an illusion that light from faraway objects is reflected by a pool of water that is not really there?

asked Jan 7 in Science

1 answer 19 views

What is the organic material that comes from plants and animals that were recently living called?

answered Jan 7 in Science

1 answer 17 views

What is the name for a material that prevents the transfer of heat energy?

answered Jan 7 in Science

1 answer 28 views

What are hurricanes called in the pacific?

answered Jan 3 in Science

1 answer 20 views

In studying energy, what term do scientists use to refer to the matter and its environment involved in energy transfers?

asked Dec 27, 2024 in Science

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