(a)
Interpretation:
The on-line and off-line process for SFE has to be differentiated.
Concept introduction:
When the source is directly available for data extraction process, it is called as on-line extraction method or process.
In off-line process, the data is utilized from other source that contains the copy of data and data extraction is done.
(b)
Interpretation:
Thestatic and dynamic extraction should be differentiated for SFE.
Concept introduction:
When the fixed amount of supercritical fluid is interacting with the matrix or analytes, it is called as static extraction method and it conserves the fluid.
In dynamic extraction method, there is always a new supercritical fluid that is used for interaction with matrix or analytes.
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Principles of Instrumental Analysis, 6th Edition
- Draw all formal charges on the structures below as is and draw 1 resonance structure that is more stable.arrow_forwardPart II. xiao isolated a compound TAD (Ca H 10 N₂) from tobacco and obtained its IR spectrum. Xiao proposed a chemical structure shown below: % Transmittance 4000 3500 3000 2500 2000 Wavenumber (cm-1) 1500 1000 (a) Explain why her proposed structure is inconsistent with the IR spectrum obtained (b) TAD exists as a tautomer of the structure xiao proposed. Draw the structure and explain why it is more compatible with the obtained spectrum. (C) what is the possible source for the fairly intense signal at 1621cm1arrow_forwardAE>AE₁ (Y/N) AE=AE₁ (Y/N) AEarrow_forwardTreatment of 2-phenylpropan-2-amine with methyl 2,4-dibromobutanoate in the presence of a nonnucleophilic base, R3N, involves two successive SN2 reactions and gives compound A. ? NH2 Br Br Propose a structural formula for compound A. You do not have to explicitly draw H atoms. You do not have to consider stereochemistry. In cases where there is more than one answer, just draw one. R3N C14H19NO2 + 2 R3NH*Br Aarrow_forwardCorrectly name this compound using the IUPAC naming system by sorting the components into the correct order. Br IN Ν Harrow_forwardHow is the radical intermediate for this structure formed? Can you please draw arrows from the first radical to the resonance form that would result in this product? I'm lost.arrow_forwardPart VI. (a) calculate the λ max of the compound using woodward - Fieser rules. (b) what types of electronic transitions are present in the compound? (c) what are the prominent peaks in the IR spectrum of the compound?arrow_forwardDon't used Ai solutionarrow_forwardPlease correct answer and don't used hand raitingarrow_forward↑ 0 Quiz List - RCC430M_RU05 X Aktiv Learning App × Qdraw resonance structure ×Q draw resonance structure xb My Questions | bartleby ×+ https://app.aktiv.com Draw a resonance structure of pyrrole that has the same number of pi bonds as the original structure. Include all lone pairs in your structure. + N H a 5 19°F Cloudy Q Search Problem 12 of 15 Atoms, Bonds and Rings Charges and Lone Pairs myhp हजु Undo Reset Remove Done Submit Drag To Pan 2:15 PM 1/25/2025arrow_forwardDon't used hand raitingarrow_forwardDon't used hand raiting and don't used Ai solutionarrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
- Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning