Using the Dumas method set-up, and eperiment was conducted using acetone ( MW=58.08). The mass of the empty 250ml flask is 351.25 g it was filled with 25 ml of the volatile acetone and coverd with an parafilm. with a small pinhole. It was heated and alter on sealed sealed after the liquid is fully evaporated. The heated flask weigh 354.53. What is the sealing temperature?

Using the Dumas method set-up, and eperiment was conducted using acetone ( MW=58.08). The mass of the empty 250ml flask is 351.25 g it was filled with 25 ml of the volatile acetone and coverd with an parafilm. with a small pinhole. It was heated and alter on sealed sealed after the liquid is fully evaporated. The heated flask weigh 354.53. What is the sealing temperature?

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter14: Chromatography

Section: Chapter Questions

Problem 9P

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Using the Dumas method set-up, and eperiment was conducted using acetone ( MW=58.08). The mass of the empty 250ml flask is 351.74 g it was filled with 25 ml of the volatile acetone and coverd with an parafilm. with a small pinhole. It was heated and alter on sealed sealed after the liquid is fully evaporated. The heated flask weigh 354.4. What is the sealing temperature? Answers in 2 decimal places no need to write the unit
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Earth, a CHEM 40.1 student, extracted a mixture of pigments from the roots of Rubiatinctorum, commonly known as rose madder. Earth spotted the root extract on twohydrophobic silica gel plates. He then placed each plate in separate developing chambers,one containing solvent system WHITE and the other housing solvent system MIX. Earthallowed the chromatograms to develop for around five minutes. Afterwards, he removedthe plates from the containers and placed them inside an iodine chamber. Thechromatograms resulting from the TLC experiment after visualization are illustrated asfollows. The distances travelled by each spot and by the solvents were measured andrecorded in the displayed table.
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