Recent questions in Analytical Chemistry

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What is the concentration of lead (Pb) in a water sample collected from a river using atomic absorption spectroscopy?

asked Jan 30 in Analytical Chemistry by DelilaBeyers (1.6k points)

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1 answer 98 views

What is the concentration of lead (Pb) in a water sample collected from a nearby river, using atomic absorption spectroscopy?

asked Jan 30 in Analytical Chemistry by Hulda4183859 (2.2k points)

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What is the concentration of lead (Pb) in a water sample collected from a local stream using atomic absorption spectroscopy? Provide a detailed analysis of the sample and a report of the results with proper calculations and units.

asked Jan 30 in Analytical Chemistry by AllenBloomfi (1.7k points)

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1 answer 98 views

What is the concentration of lead (Pb) in a water sample collected from a local river, and how does it compare to the maximum permissible limit set by the World Health Organization (WHO)? Determine the answer using atomic absorption spectroscopy and provide a detailed report including instrumental parameters, experimental procedure, and results.

asked Jan 30 in Analytical Chemistry by ZellaSeamon3 (1.6k points)

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What is the concentration of lead (Pb) in a water sample collected from a industrial site using atomic absorption spectroscopy?

asked Jan 30 in Analytical Chemistry by DevonHamlett (2.3k points)

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1 answer 110 views

What is the concentration of lead (Pb) in a soil sample collected from a playground using X-ray fluorescence spectroscopy?

asked Jan 30 in Analytical Chemistry by AsaYty57562 (2.1k points)

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1 answer 89 views

What is the concentration of lead (Pb) in a drinking water sample using cyclic voltammetry?

asked Jan 30 in Analytical Chemistry by VirgilioAbe5 (1.9k points)

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1 answer 83 views

What is the concentration of lead (Pb) and cadmium (Cd) in a water sample collected from a polluted river using atomic absorption spectroscopy?

asked Jan 30 in Analytical Chemistry by EloiseGrimm2 (1.9k points)

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1 answer 120 views

What is the concentration of iron(II) sulfate in a sample of water taken from a lake, using spectrophotometry with a known molar absorptivity of 11,300 L/mol*cm, if the absorbance of the sample is measured to be 0.423 at a wavelength of 510 nm?

asked Jan 30 in Analytical Chemistry by ZellaSeamon3 (1.6k points)

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What is the concentration of iron(II) sulfate in a 20 mL sample solution that has an absorbance of 0.45 at 562 nm, given that the molar extinction coefficient of iron(II) sulfate at that wavelength is 7,590 M^-1cm^-1?

asked Jan 30 in Analytical Chemistry by AudreaV25265 (2.0k points)

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1 answer 121 views

What is the concentration of iron(II) ions in a water sample that has an absorbance of 0.55 at 510 nm when treated with a standard solution of 4.65 x 10^-5 M iron(II) sulfate using colorimetry?

asked Jan 30 in Analytical Chemistry by LawrenceMcGr (1.8k points)

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1 answer 98 views

What is the concentration of iron(II) ions in a sample of water collected from a local pond using colorimetry, if the measured absorbance of the sample at 565 nm is 0.673 and the molar absorptivity of the iron(II) complex at this wavelength is 20,500 M⁻¹·cm⁻¹?

asked Jan 30 in Analytical Chemistry by MOIRoderick9 (1.8k points)

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What is the concentration of iron ions in a water sample collected from a local lake using polarography technique?

asked Jan 30 in Analytical Chemistry by ChristelIdr7 (1.7k points)

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1 answer 122 views

What is the concentration of iron ions in a sample of tap water using spectrophotometry?

asked Jan 30 in Analytical Chemistry by GlendaNester (1.8k points)

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1 answer 93 views

What is the concentration of iron in a water sample collected from a local lake using voltammetry with a standard potential of -0.44 V?

asked Jan 30 in Analytical Chemistry by RandolphWvo (1.9k points)

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1 answer 95 views

What is the concentration of iron (II) sulfate in a given solution using spectrophotometry with a known absorbance value at a wavelength of 400 nm?

asked Jan 30 in Analytical Chemistry by EleanoreOliv (1.9k points)

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1 answer 105 views

What is the concentration of iron (II) ions in a water sample, measured in mg/L, if the sample has an absorbance reading of 0.345 at a wavelength of 477 nm using a colorimeter and following the methodology of the 1,10-phenanthroline method?

asked Jan 30 in Analytical Chemistry by Calvin40083 (1.6k points)

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1 answer 146 views

What is the concentration of iron (II) ions in a water sample with absorbance of 0.295 at a wavelength of 510 nm, given that the molar extinction coefficient of iron (II) ions is 11,300 M^-1cm^-1 at this wavelength? Use colorimetry to determine the solution.

asked Jan 30 in Analytical Chemistry by Diana66S829 (1.6k points)

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1 answer 117 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 Jan 30 in Analytical Chemistry by MarcyWoolery (1.8k points)

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1 answer 100 views

What is the concentration of iron (II) ions in a solution if the absorbance reading from the colorimeter is 0.43 and the path length of the solution in the cuvette is 1 cm? The molar absorption coefficient of iron (II) ions is 6.16 x 10^3 M^-1 cm^-1. The solution has a volume of 10 mL. Calculate the concentration of iron (II) ions in the solution in units of Molarity.

asked Jan 30 in Analytical Chemistry by Jaqueline50I (2.0k points)

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