Recent activity by Arlie87Z0635

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Consider an electrochemical cell containing a copper electrode in a 0.5 M CuSO4 solution and a silver electrode in a 1.0 M AgNO3 solution. Calculate the current density at a temperature of 25°C given that the copper electrode has a surface area of 5 cm² and the silver electrode has a surface area of 10 cm². The standard reduction potentials for Cu²⁺ and Ag⁺ are -0.34 V and 0.80 V, respectively. Use the Nernst equation to calculate the cell potential and then use Ohm's law to calculate the current density.

answered 2 days ago in ElectroChemistry

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How can you determine the concentration of copper (II) ions in a solution using colorimetry?

answered 6 days ago in Analytical Chemistry

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A chemistry student needs to determine the concentration of a certain analyte in a water sample using colorimetry. The student has access to a spectrophotometer and a standard calibration curve. What is the concentration of the analyte in the water sample, given its absorbance value in the spectrophotometer and the calibration curve data?

asked Jan 22 in Analytical Chemistry

1 answer 22 views

How does the social constructionist approach relate to discursive psychology?

answered Jan 16 in Psychology

1 answer 4 views

Who developed the theoretical orientation of gestalt therapy?

asked Jan 15 in Psychology

1 answer 23 views

Where does the queer theory of human sexuality focus?

answered Jan 15 in Psychology

1 answer 22 views

What is the social norms theory?

asked Jan 15 in Psychology

1 answer 30 views

What is the superego according to Freud's structural model?

asked Jan 15 in Psychology

1 answer 31 views

What are the different ways of coping with stress and trauma?

asked Jan 13 in Psychology

1 answer 5 views

When gas pressure-forces are used to move an object the work is done on the object by?

asked Jan 8 in Science

1 answer 18 views

What is the nickname of the best-known geyser in the world, which erupts reliably every 90 minutes?

answered Jan 7 in Science

1 answer 20 views

What function of the car is affected by the pedal that controls the amount of gas the engine gets?

asked Jan 6 in Science

1 answer 25 views

The timing of events in what cycle - which lasts just minutes in fruit fly embryos - is controlled by mechanisms that are both internal and external to the cell?

asked Jan 2 in Science

1 answer 25 views

Radiocarbon is useful for dating relatively young materials with what element as their base?

answered Dec 31, 2024 in Science

1 answer 27 views

Objects in motion that return to the same position after a fixed period of time are said to be in what?

answered Dec 31, 2024 in Science

1 answer 34 views

How many neutrons do 99% of carbon atoms have?

asked Dec 30, 2024 in Science

1 answer 49 views

What substances contained in lemons, vinegar, and sour candies have a sour taste?

asked Dec 28, 2024 in Science

1 answer 46 views

What are models good for?

asked Dec 28, 2024 in Science

1 answer 8 views

What type of stress causes horizontal motions in strike-slip faults?

asked Dec 27, 2024 in Science

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