Homework Answers
Yes, i think your answer is correct also consider the Van derWaal forces of attraction.
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am i correct on these questions? if not please let me know how
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looking for a check of my work, is this correct? if not please let me know....
looking for a check of my work, is this correct? if not please
let me know. thanks!
1. (23 Total Points) Gas Chromatography a. (5 pts) Circle the BEST answer for the question below. Of the compounds listed below, which would you expect to eluto last from a nonpolar gas chromatographic column? 3 • n-Propanol (CH3CH2CH2OH) Polar Polar = 7* (mPoland 1. Methanol (CH3OH) Polar NON-Polar = 2nd 4. n-Butanol (CH3CH2CH2CH2OH) ВР 1st Low C . n-Pentanol (CH3CH2CH2CH2CH2OH) and Higher...
4. The compounds in a mixture separated by GC can be identified by their retention times....
4. The compounds in a mixture separated by GC can be identified by their retention times. If you Suructor nad not told you which peak in the GC chromatogram corresponded to which alker you didn't know the boiling points of the alkenes, how could you determine the identity or each peak by its retention time? Identities of the components in a mixture separated by GC can also be determined by the technique called "spiking". Suppose you had run a chromatogram...
can u help me with 1,2,3? 1. (2 pts - 1 pt for correct traveling order,...
can u help me with 1,2,3?
1. (2 pts - 1 pt for correct traveling order, 1 pt for explanation) Based on the skeletal structures of biphenyl, benzhydrol and benzophenone, for a given TLC eluent, which of the three compounds would you expect to travel further on the TLC plate, and why? Copy your prediction into the Introduction section of your lab notebook. 2. (1 pt -0.5 pts per spot) Calculate the retention factor (R1) for each of the spots...
Hi can someone help me with my pre lab theory questions (1,2,3) on rate of elution...
Hi can someone help me with my pre lab theory questions (1,2,3)
on rate of elution or Rf? Here is some background below. Please
help explain as many as possible (1-3)! I dont really get the
relation ships in this lab, thank you!
1. What factors affect the rate of elution in organic compounds? 2. Explain what is the relationship between polarities of compounds (polar/non- polar compound) and rate of elution (Rf). 3. Explain what is the relationship between solvent...
can I have help on question 5 please? Chemistry 70A Experiment 5 - Distillation Fall 2019...
can I have help on question 5 please?
Chemistry 70A Experiment 5 - Distillation Fall 2019 5. (4 pts) For gas chromatography, what four factors determine the retention time for organic compounds moving through the column?! 6. (2 pts) Cyclohexane was the first compound to "elute" from the the gc column. Suggest some reasons why cyclohexane elutes before toluene.
Table 2: Alcohol and Ketone Standards GC Retention Times GC#: Retention time Alcohol Standard Mixture Phent...
Table 2: Alcohol and Ketone Standards GC Retention Times GC#: Retention time Alcohol Standard Mixture Phent ion= 2.05Smin low Peak 1 Compound Name: athanol Rapesnal utanal aclapeatanal 4.755min oilng 6.895min .230 min Peak 2 Compound Name: Peak 3 Compound Name: Peak 4 Compound Name: GC#:1 Ketone Standard Mixture Retention time 2.575un Peak 1 Compound Name: Acclono Butanon a Pentanone 2tHex anon Peak 2 Compound Name: min Peak 3 Compound Name: 615 min 1D. 307 min Peak 4 Compound Name: Part...
2. If two different compounds have the same Rr value, how might they be identified using paper chromatography?...
2. If two different compounds have the same Rr value, how might they be identified using paper chromatography? 3. Why is it important to keep the spots on the paper as small as possible? 4. If the solvent pool at the bottom of the beaker touched the spots on the 1.5cm line, what would happen to the spots? How would you address this error? 5. If you were teaching a student how to do paper chromatography, what three pieces of...
Gas Chromatography Analysis: Please interpret the set of GC data below. This set of data consists...
Gas Chromatography Analysis:
Please interpret the set of GC data below. This set of data consists of a mixture of three compounds (3-methylbutan-1-ol, hexanal, and cyclopentanone shown in the lab manual) that have similar boiling points. There is a gas chromatogram of the mixture and gas chromatograms of the individual compounds for peak identification by retention time. You will answer the following questions based on this data set: 1. Was our gas chromatograph able to separate three compounds with similar...
Could you please help me with the questions I got wrong? If you dont know the...
Could you please help me with the questions I got wrong? If you
dont know the answer please do not comment, leave it for another
expert to answer because I really need to get this done , Thank you
so much ^^ There's also a guide to the calculations but i dont get
it
Table view List view Sample 2 Sample 3 Table 5. Calculations for concentration of acid solution Sample 1 [1] Volume of acid (mL) 25.0 25.0 25.0...
please help walk me through how to solve these, the questions change everytime. i am not...
please help walk me through how to solve these, the questions
change everytime. i am not even sure where to start. thank
you
HON WILL UNULNEM TULENERAL CHEMISTRY LABE Amber Gloria's Qula History Lab & Quiz Exploring Buffers Background Incorrect Question 3 0/1 pts If you mix a weak acid and a weak base together with concentrations of 0.33 and the acid has apk, -8.58, what is the pH of the buffer? Give your answer to two decimals. pH =...
looking for a check of my work, is this correct? if not please
let me know. thanks!
1. (23 Total Points) Gas Chromatography a. (5 pts) Circle the BEST answer for the question below. Of the compounds listed below, which would you expect to eluto last from a nonpolar gas chromatographic column? 3 • n-Propanol (CH3CH2CH2OH) Polar Polar = 7* (mPoland 1. Methanol (CH3OH) Polar NON-Polar = 2nd 4. n-Butanol (CH3CH2CH2CH2OH) ВР 1st Low C . n-Pentanol (CH3CH2CH2CH2CH2OH) and Higher...
4. The compounds in a mixture separated by GC can be identified by their retention times. If you Suructor nad not told you which peak in the GC chromatogram corresponded to which alker you didn't know the boiling points of the alkenes, how could you determine the identity or each peak by its retention time? Identities of the components in a mixture separated by GC can also be determined by the technique called "spiking". Suppose you had run a chromatogram...
can u help me with 1,2,3?
1. (2 pts - 1 pt for correct traveling order, 1 pt for explanation) Based on the skeletal structures of biphenyl, benzhydrol and benzophenone, for a given TLC eluent, which of the three compounds would you expect to travel further on the TLC plate, and why? Copy your prediction into the Introduction section of your lab notebook. 2. (1 pt -0.5 pts per spot) Calculate the retention factor (R1) for each of the spots...
Hi can someone help me with my pre lab theory questions (1,2,3)
on rate of elution or Rf? Here is some background below. Please
help explain as many as possible (1-3)! I dont really get the
relation ships in this lab, thank you!
1. What factors affect the rate of elution in organic compounds? 2. Explain what is the relationship between polarities of compounds (polar/non- polar compound) and rate of elution (Rf). 3. Explain what is the relationship between solvent...
can I have help on question 5 please?
Chemistry 70A Experiment 5 - Distillation Fall 2019 5. (4 pts) For gas chromatography, what four factors determine the retention time for organic compounds moving through the column?! 6. (2 pts) Cyclohexane was the first compound to "elute" from the the gc column. Suggest some reasons why cyclohexane elutes before toluene.
Table 2: Alcohol and Ketone Standards GC Retention Times GC#: Retention time Alcohol Standard Mixture Phent ion= 2.05Smin low Peak 1 Compound Name: athanol Rapesnal utanal aclapeatanal 4.755min oilng 6.895min .230 min Peak 2 Compound Name: Peak 3 Compound Name: Peak 4 Compound Name: GC#:1 Ketone Standard Mixture Retention time 2.575un Peak 1 Compound Name: Acclono Butanon a Pentanone 2tHex anon Peak 2 Compound Name: min Peak 3 Compound Name: 615 min 1D. 307 min Peak 4 Compound Name: Part...
2. If two different compounds have the same Rr value, how might they be identified using paper chromatography? 3. Why is it important to keep the spots on the paper as small as possible? 4. If the solvent pool at the bottom of the beaker touched the spots on the 1.5cm line, what would happen to the spots? How would you address this error? 5. If you were teaching a student how to do paper chromatography, what three pieces of...
Gas Chromatography Analysis:
Please interpret the set of GC data below. This set of data consists of a mixture of three compounds (3-methylbutan-1-ol, hexanal, and cyclopentanone shown in the lab manual) that have similar boiling points. There is a gas chromatogram of the mixture and gas chromatograms of the individual compounds for peak identification by retention time. You will answer the following questions based on this data set: 1. Was our gas chromatograph able to separate three compounds with similar...
Could you please help me with the questions I got wrong? If you
dont know the answer please do not comment, leave it for another
expert to answer because I really need to get this done , Thank you
so much ^^ There's also a guide to the calculations but i dont get
it
Table view List view Sample 2 Sample 3 Table 5. Calculations for concentration of acid solution Sample 1 [1] Volume of acid (mL) 25.0 25.0 25.0...
please help walk me through how to solve these, the questions
change everytime. i am not even sure where to start. thank
you
HON WILL UNULNEM TULENERAL CHEMISTRY LABE Amber Gloria's Qula History Lab & Quiz Exploring Buffers Background Incorrect Question 3 0/1 pts If you mix a weak acid and a weak base together with concentrations of 0.33 and the acid has apk, -8.58, what is the pH of the buffer? Give your answer to two decimals. pH =...
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