SOLVENT SYSTEM DISTANCE SPOTS TRAVELLED, cm 6.4 solvent A 1.4 ITSAY B 1.9 4.1 C 5.3 6.5 solvent C A 0.7 1.7 PHUKET C D 2.5 A 3.0 ITSAY PHUKET 1. Solve for the R values of the spots formed for each solvent. Report your answers in four significant figures. 2. Based on the resulting chromatograms after visualization with iodine vapor, which between the solvent systems ITSAY and PHUKET resulted in a more effective separation of the pigments of the indigo extract? Explain your choice. D. B.

SOLVENT SYSTEM DISTANCE SPOTS TRAVELLED, cm 6.4 solvent A 1.4 ITSAY B 1.9 4.1 C 5.3 6.5 solvent C A 0.7 1.7 PHUKET C D 2.5 A 3.0 ITSAY PHUKET 1. Solve for the R values of the spots formed for each solvent. Report your answers in four significant figures. 2. Based on the resulting chromatograms after visualization with iodine vapor, which between the solvent systems ITSAY and PHUKET resulted in a more effective separation of the pigments of the indigo extract? Explain your choice. D. B.

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter3: Statistical Tests With Excel

Section: Chapter Questions

Problem 1P

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Study the tabulated data during an gravimetric analysis of BaSO4 experiment Trial T1 T2 T3 Mass of sample (g) 1.0040 1.0100 1.0050 Constant weight of empty crucible (g) 10.2453 10.2454 10.2454 Constant weight after ignition (g) 10.3253 10.3252 10.3253 1. Calculate the mean mass of precipitate as BaSO4 a. 0.0799 g b. 0.0800 c. 0.08 g 2. Calculate the mean weight of sulphate (MM BaSO4 = 233.39 g/mol, So42- = 176 g/mol)? a. 0.0603 g b. 0.06 g c. 0.06025 g 3. Calculate the mean % SO42- in the sample a. 6.00% b. 5.991% c. 5.9908%
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