Questions by JacquettaFor

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1 answer 59 views

What is the concentration of iron (II) ions in a water sample if the absorbance of the sample at a wavelength of 565 nm is measured to be 0.842 and it was found that a 1 cm cuvette contains 1.25 x 10^-4 moles of iron (II) ions? (The molar absorptivity of iron (II) ions at 565 nm is 1.9 x 10^4 L/mol cm).

asked 6 days ago in Analytical Chemistry

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1 answer 73 views

How many moles of copper (Cu) are present in a sample weighing 0.250 g when 10.0 coulombs of electricity is passed through it during the coulometric titration process? The electrode used was a copper electrode, and the atomic weight of copper is 63.55 g/mol.

asked 6 days ago in Analytical Chemistry

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1 answer 43 views

Assume a reaction has reached equilibrium in a 1-liter container. If the volume is now reduced to 0.5 liters, what is the effect on the equilibrium position of the reaction?

asked Jan 22 in Chemical equilibrium

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1 answer 36 views

A certain hydrocarbon requires 343 kJ of energy to break one mole of carbon-carbon bonds and 413 kJ/mole to break one mole of carbon-hydrogen bonds. What is the bond dissociation energy of the carbon-carbon and carbon-hydrogen bonds in this hydrocarbon?

asked Jan 22 in ThermoChemistry

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1 answer 17 views

What is the impact of parental warmth on child outcomes?

asked Jan 20 in Psychology

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1 answer 42 views

What is the role of metapsychology in understanding psychopathology?

asked Jan 16 in Psychology

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1 answer 32 views

What is at the top of the mesosphere?

asked Jan 6 in Science

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1 answer 18 views

What force opposes a motion of a moving body? for example a car breaking on a road.

asked Jan 6 in Science

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1 answer 52 views

An offspring that inherits a mutation in a gamete will have the mutation in all of its?

asked Dec 30, 2024 in Science

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