Recent questions in Chemistry

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What is the concentration of iron (Fe) in a sample of river water using spectrophotometry at a wavelength of 510 nm? Given that the absorbance value of the sample at 510 nm is 0.42, and the molar absorptivity of iron (Fe) at that wavelength is 18,000 M^-1 cm^-1.

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

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What is the concentration of iron (Fe) in a sample of river water using spectrophotometric analysis with a known calibration curve and absorbance of 0.25 at a wavelength of 510 nm? The molar absorptivity of Fe at 510 nm is 8.70 x 10^3 M^-1cm^-1 and the path length of the cuvette used is 1.0 cm.

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

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What is the concentration of iron (Fe) in a given water sample using spectrophotometry?

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

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What is the concentration of iron (Fe) in a given water sample using spectrophotometry with a known absorbance value of 0.52 and molar absorbivity coefficient of 1.20 x 10^4 M^-1 cm^-1 at a wavelength of 565 nm?

asked Jan 30 in Analytical Chemistry by SenaidaWhitf (2.4k points)

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What is the concentration of hydrochloric acid (HCl) in a solution, given that 25 mL of this solution requires 0.10 M sodium hydroxide (NaOH) to reach the equivalence point during a titration?

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

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What is the concentration of hydrochloric acid (HCl) in a solution if it took 25.0 mL of 0.100 M sodium hydroxide (NaOH) to neutralize 30.0 mL of the HCl solution?

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

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1 answer 88 views

What is the concentration of hydrochloric acid (HCl) in a solution if 25mL of 0.1M sodium hydroxide (NaOH) is required to completely neutralize 20mL of the acid?

asked Jan 30 in Analytical Chemistry by AlineBacon1 (1.5k points)

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1 answer 115 views

What is the concentration of hydrochloric acid (HCl) in a solution if 25 mL of 0.1 M sodium hydroxide (NaOH) was required to neutralize 50 mL of HCl solution using titration technique?

asked Jan 30 in Analytical Chemistry by IFYRussel191 (2.2k points)

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1 answer 82 views

What is the concentration of hydrochloric acid (HCl) in a 100 mL solution if it requires 50 mL of 0.1 M sodium hydroxide (NaOH) to neutralize it during a titration process?

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

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1 answer 87 views

What is the concentration of fluoride ions present in a sample of drinking water using a fluoride ion-selective electrode?

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

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1 answer 108 views

What is the concentration of Fe2+ ions in a water sample that has been treated with an iron-reducing bacteria? Use potentiometry to quantify the amount of Fe2+ ions present in the sample.

asked Jan 30 in Analytical Chemistry by AidanSewell2 (1.9k points)

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1 answer 117 views

What is the concentration of Fe2+ ions in a given iron tablet using colorimetry?

asked Jan 30 in Analytical Chemistry by BeatriceJ11 (2.0k points)

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1 answer 134 views

What is the concentration of Fe in a given sample of iron ore, using the coulometric titration technique with a standard solution of K2Cr2O7?

asked Jan 30 in Analytical Chemistry by XLNDorris808 (1.7k points)

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1 answer 106 views

What is the concentration of each ion present in a mixture of chloride, nitrate, and sulfate ions using capillary electrophoresis?

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

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1 answer 87 views

What is the concentration of copper sulfate in a solution that has an absorbance of 0.332 at a wavelength of 630 nm, given that the molar absorptivity of copper sulfate is 8.8 x 10^3 L/(mol cm)?

asked Jan 30 in Analytical Chemistry by ElenaBranco0 (2.0k points)

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1 answer 40 views

What is the concentration of copper sulfate in a 50 mL solution if the absorbance measured by a spectrophotometer is found to be 0.450 at a wavelength of 450 nm? The molar absorptivity of copper sulfate at this wavelength is 9.6 x 10^3 L/mol.cm.

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

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1 answer 15 views

What is the concentration of copper ions present in a sample if the absorbance value is 0.345 and the path length is 1 cm? The molar absorptivity of copper ions is known to be 4.58 x 10^4 L mol^-1 cm^-1 at a wavelength of 600 nm in spectrophotometry.

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

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1 answer 86 views

What is the concentration of copper ions in a water sample obtained from an abandoned mine using polarographic analysis?

asked Jan 30 in Analytical Chemistry by AlexK0785479 (1.8k points)

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1 answer 61 views

What is the concentration of copper ions in a water sample collected from a certain river using the square wave voltammetry method?

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

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1 answer 98 views

What is the concentration of copper ions in a sample solution of known volume using polarography?

asked Jan 30 in Analytical Chemistry by IDQMyles1187 (2.5k points)

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