Recent questions in Chemistry

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What is the concentration of a hydrochloric acid solution if 25 ml of the solution requires 18 ml of a 0.1 M sodium hydroxide solution for complete neutralization during a titration?

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

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1 answer 105 views

What is the concentration of a hydrochloric acid solution if 25 mL of the solution requires 15 mL of 0.1 M sodium hydroxide for complete neutralization?

asked Jan 30 in Analytical Chemistry by MistyReagan2 (1.4k points)

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What is the concentration of a hydrochloric acid (HCl) solution in moles per liter (M) if 25 mL of a 0.1 M sodium hydroxide (NaOH) solution is required to neutralize 50 mL of the HCl solution?

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

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What is the concentration of a hydrochloric acid (HCl) solution if 25.0 ml of it requires 30.0 ml of 0.1 M sodium hydroxide (NaOH) to completely react in a titration?

asked Jan 30 in Analytical Chemistry by KelleS495456 (1.9k points)

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What is the concentration of a copper(II) ion (Cu2+) solution using polarography if the current at -0.5 V vs. saturated calomel electrode (SCE) is 10 mA and the current at -1.0 V vs. SCE is 25 mA, assuming the standard reduction potential of Cu2+/Cu is +0.34 V vs. SCE and the supporting electrolyte is 0.1 M KCl?

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

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What is the concentration of a copper sulfate solution if 40.0 mL of the solution requires 1350 coulombs of charge to fully oxidize all the copper ions present, using a coulometric titration method? The solution was prepared by dissolving a sample of copper sulfate pentahydrate in water and diluting it to a final volume of 500 mL. Given the molar mass of copper sulfate pentahydrate and the total charge required to oxidize one mole of copper ions.

asked Jan 30 in Analytical Chemistry by TahliaEvatt8 (2.2k points)

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What is the concentration of a copper (II) sulfate solution if its absorbance value at 620 nm is 0.45? Use a standard calibration curve with known concentrations of copper (II) sulfate and their corresponding absorbance values to determine the unknown concentration of the solution using colorimetry.

asked Jan 30 in Analytical Chemistry by MVCJohnnie50 (2.1k points)

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What is the concentration of a copper (II) sulfate solution if its absorbance is measured to be 0.25 using a spectrophotometer with a 1 cm cuvette and a wavelength of 620 nm, assuming a molar absorptivity of 5,400 M^-1cm^-1?

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

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1 answer 72 views

What is the concentration in molarity of a hydrochloric acid solution if it requires 25 mL of a 0.1 M sodium hydroxide solution to neutralize 20 mL of the acid solution?

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

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What is the concentration and identity of proteins present in the given sample using electrophoresis analysis?

asked Jan 30 in Analytical Chemistry by RobynButz517 (1.9k points)

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1 answer 106 views

What is the concentration and composition of the amino acids present in a given protein sample using capillary electrophoresis as the analytical method?

asked Jan 30 in Analytical Chemistry by Georgianna69 (2.2k points)

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What is the concentration (in units of moles/liter) of hydrochloric acid (HCl) in a solution based on a titration experiment, in which 25.00 mL of 0.10 M sodium hydroxide (NaOH) solution is required to neutralize 20.00 mL of the HCl solution?

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

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1 answer 76 views

What is the concentration (in ppm) of caffeine in a given sample of coffee extract, determined using liquid chromatography?

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

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1 answer 110 views

What is the concentration (in moles per liter) of a hydrochloric acid (HCl) solution if 25 mL of the solution reacts with 50 mL of a 0.1 M sodium hydroxide (NaOH) solution during a titration process?

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

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1 answer 100 views

What is the concentration (in molarity) of a hydrochloric acid solution, HCl, if 25.0 ml of a 0.100 M sodium hydroxide solution, NaOH, was required to neutralize 35.0 ml of the HCl solution during a titration?

asked Jan 30 in Analytical Chemistry by TrenaSee705 (1.7k points)

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1 answer 84 views

What is the concentration (in Molarity) of a hydrochloric acid solution if it requires 25.0 mL of a 0.105 M sodium hydroxide solution for complete neutralization during a titration process?

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

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1 answer 100 views

What is the concentration (in mol/L) of an HCl solution if 25.00 mL of this solution is required to neutralize 0.015 moles of NaOH in a titration?

asked Jan 30 in Analytical Chemistry by JeffreyCone5 (1.7k points)

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1 answer 81 views

What is the concentration (in g/L) of FeCl3 in a 25 mL sample that has an absorbance of 0.325 at a wavelength of 535 nm, assuming an extinction coefficient of 976 L/mol/cm?

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

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1 answer 92 views

What is the composition of the volatile components in a mixture of gasoline using gas chromatography?

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

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1 answer 106 views

What is the composition of proteins in the given biological sample using electrophoresis technique?

asked Jan 30 in Analytical Chemistry by MonikaQuirk7 (2.0k points)

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