Recent activity by PYVFelix9236

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Determine the concentration of copper ions in a copper sulfate solution by constructing an electrochemical cell and measuring its voltage using a standard hydrogen electrode.

answered 1 day ago in Physical Chemistry

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Calculate the enthalpy change for the polymerization of polyethylene using the following information: ΔHf° of ethylene (-20.4 kJ/mol) and polyethylene (-1024 kJ/mol); the reaction equation: nC2H4 (g) → [-CH2-CH2-]n (s)

answered Jan 23 in ThermoChemistry

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What is the purpose of theory evaluation?

asked Jan 16 in Psychology

1 answer 19 views

What are the limitations of the input hypothesis in explaining language development?

asked Jan 15 in Psychology

1 answer 21 views

What do the letters in our blood types represent?

answered Jan 6 in Science

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People with celiac disease have an immune response to what, which ultimately leads to malnutrition, cramping, and diarrhea?

answered Dec 31, 2024 in Science

1 answer 35 views

Mutualism is an interaction between individuals of two different species that has what effect on both of them?

answered Dec 31, 2024 in Science

1 answer 28 views

Lots of volcanoes form along which boundaries?

answered Dec 31, 2024 in Science

1 answer 19 views

In what kind of a series does the genetic code work?

asked Dec 31, 2024 in Science

1 answer 31 views

In desert cactus, thorns that protect the water held in a large, barrel-shaped stem are an example of what?

asked Dec 31, 2024 in Science

1 answer 11 views

Energy cannot be created or destroyed - it can only change what?

answered Dec 30, 2024 in Science

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What is contained in the skin of brightly colored poison dart frogs?

answered Dec 28, 2024 in Science

1 answer 24 views

How close a measurement is to the correct value for that measurement is known as what?

asked Dec 28, 2024 in Science

1 answer 25 views

How can bacterial stis usually be cured?

answered Dec 28, 2024 in Science

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