Recent activity by MagnoliaHend

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What is the current density in an electrochemical cell with a copper electrode and a zinc electrode if the current produced by the cell is 0.5 A and the surface area of the copper electrode is 10 cm² while the surface area of the zinc electrode is 5 cm²?

asked 1 day ago in ElectroChemistry

1 answer 34 views

How can environmental chemistry concepts be integrated into high school chemistry curriculums to increase student awareness and understanding of the impact of chemistry on the environment?

answered Feb 6 in Chemical education

1 answer 80 views

How does the activation energy for an electron transfer reaction vary with temperature? What is the relationship between the rate constant and the activation energy of a redox reaction? How can we predict the direction of electron transfer in a redox reaction?

asked Jan 30 in Quantum Chemistry

1 answer 53 views

How can the concentration of copper ions in a water sample be determined using polarography?

asked Jan 29 in Analytical Chemistry

1 answer 63 views

Calculate the enthalpy change for the reaction below using Hess's Law and the given thermochemical equations:2H2(g) + O2(g) -> 2H2O(g) deltaH1 = -484 kJ/molH2(g) + 1/2O2(g) -> H2O(g) deltaH2 = -242 kJ/mol 2H2O(g) -> 2H2(g) + O2(g) deltaH3 = +484 kJ/mol

asked Jan 23 in ThermoChemistry

1 answer 8 views

Compare the contributions of Freud and Erik Erikson to developmental psychology.

answered Jan 17 in Psychology

1 answer 41 views

Please evaluate the filter theory of attention.

answered Jan 16 in Psychology

1 answer 20 views

What is the handicap theory?

asked Jan 15 in Psychology

1 answer 53 views

Where does the self-medication hypothesis suggest addiction comes from?

answered Jan 15 in Psychology

1 answer 33 views

What was the central concept in behaviourism?

asked Jan 14 in Psychology

1 answer 9 views

What, now former, planet is small, icy, and rocky?

answered Jan 8 in Science

1 answer 23 views

What tool, used to locate underwater objects, utilizes ultrasound in a way that is similar to echolocation?

answered Jan 8 in Science

1 answer 40 views

What is the name for the amount of water vapor in the air?

asked Jan 7 in Science

1 answer 30 views

What is most of the water used in agriculture used for?

asked Jan 6 in Science

1 answer 24 views

What are animals that live with tiny zooxanthellae that also photosynthesize?

asked Jan 2 in Science

1 answer 18 views

There is a positive correlation between the ability to conduct thermal energy and what other energy, as exemplified by metals?

asked Jan 2 in Science

1 answer 46 views

Integral and peripheral proteins are associated with what fatty bilayer?

answered Dec 31, 2024 in Science

1 answer 23 views

Having extra chromosomes or damaged chromosomes can cause what?

answered Dec 30, 2024 in Science

1 answer 10 views

What is the process called when secretory cells export products?

answered Dec 27, 2024 in Science

1 answer 29 views

What are two nonliving things that all living things need for survival?

answered Dec 27, 2024 in Science

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