**Text Transcription:**Identities of the components in a mixture may be determined by a technique called *spiking*. Suppose you had run a gas chromatogram on your product and had then deliberately added a drop of a known sample of 3-methylcyclohexene to a drop of your product. What would you expect the new chromatogram to show you?---**Explanation for Educational Context:**In this passage, the concept of *spiking* is introduced as a method for identifying components in a chemical mixture. Spiking involves adding a known substance, in this case, 3-methylcyclohexene, into the mixture to see how it affects the chromatogram. A gas chromatogram is a graph used to analyze the composition of a chemical sample by separating its components. When you add or "spike" a known sample to the mixture and run a new chromatogram, you would typically expect to see an increase or change in the peak corresponding to that substance, confirming its presence in the mixture. This technique helps distinguish specific substances by comparing the chromatograms before and after spiking.

Spiking is a widely used analytical technique in chemistry for identifying or confirming the…

Identities of the components in a mixture may be determined by a technique called spiking. Suppose you had run a gas chromatogram on your product and had then deliberately added a drop of a known sample of 3-methylcyclohexene to a drop of your product. What would you expect the new chromatogram to show you?

Identities of the components in a mixture may be determined by a technique called spiking. Suppose you had run a gas chromatogram on your product and had then deliberately added a drop of a known sample of 3-methylcyclohexene to a drop of your product. What would you expect the new chromatogram to show you?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

What are the functions of the graduated cylinder and distillate in a distillation set-up?
Please help me with this
Part C: Determination of the alcohol content of unknown liquor: Volume (mL) Sample ТИШТИНА 0.00% alcohol 10.0% alcohol 20.0% alcohol 40.0% alcohol 50.0% alcohol Unknown Mass (g) 1o podina ko 9.8919 9.7899 9.600 9 9.420 д % Alcohol content of the liquor 9.2155 9.5089 2VLELA CVOLION EAEK EVI OK DRA IVBOKY LOBAN ocen 10.00 10.00 10.00 10.00 10.00 10.00 tiend Density (g/mL) 0.00% alcohol calculation: ися → о 0.99 во 0.99 Ino7 sm dole 120.00 supinubst sdi na LANG 411 be: [scordas: 0.97 0.94 in oil to notisalarisi 0.92 0.95
You are creating a standard curve for a protein experiment. You have to stock solution of BS a and would like to obtain dilutions. Explain how you would create a 1:1000 dilution of your protein stock solution.
You use paper chromatography to separate the following two molecules. The stationary phase is coated with hexane C6H14 and the mobile phase is water. Which molecule will travel furthest up the paper? Explain using intermolecular forces between molecule and water. OH OH Phenol Napthol
A student obtains 0.95 g of crude 9-fluorenone and performs a recrystallization in cyclohexane (13 mL per 1 g crude 9-fluorenone). If the student recovered 0.57 of pure 9-fluorenone, what was the percent recovery of the recrystallization? Report your answer to no decimal places. Your Answer: Answer
We used tab water to extract caffeine from tea instead of using distilled water. How does it affect your result? Explain it scientifically. If you forgot to add anhydrous sodium sulfate, how does it affect your result? Explain it scientifically If you forgot to cap the TLC chamber, how does it affect your result? Explain it scientifically.
Convert your average ppm concentration (and standard deviation) of Ca from the ISE measurements below to molar concentration, assuming solution density of 1.000 g/mL. 69.3 mg/L 71.1 mg/L 72.7 mg/L Calculate average and standard deviation first and use it to calculate final answers.
Which of the following methods is not an appropriate method for purifying a solid under normal laboratory conditions? sublimation Ochromatography distillation recrystallization
1. As shown below, a student obtains two quality chromatograms for her distillate and pot samples, containing methanol and cyclohexanol. Match Chromatograms A and B with distillate or pot, and explain your conclusion. Circle your response: Chromatogram A A: Distillate or Pot Explain your answer: t=0 Chromatogram B B: Distillate or Pot
You are given a concentrated stock solution of 3.0 M sucrose, and you’re asked to do a serial dilution of 1:25, 1:10, and 1:5. What is the final concentration of sucrose (in mM) you achieve after these dilutions. Show your unit conversions step by step
An excess of 0.34 mg Pb is obtained from an assay test determined in an analysis. What is the percent relative error in ppt if the mass of the sample is 550 g?