Homework Answers
first I m drawing structures.
The retention factor is defined as the
distance traveled by the compound divided by the distance traveled
by the solvent.
The larger an Rf of a compound, the larger the
distance it travels on the TLC plate.this depends
on the type of solvent also whether it is polar or non
polar.
feel
free to ask any doubt in the comment section.
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can
someone help me with this question please
3. Draw the structu res of the four...
Can someone please help me out with the Rf value PLEASE!! Thin Layer Chromatography Procedures 1)...
Can someone please help me out with the Rf value
PLEASE!!
Thin Layer Chromatography Procedures 1) Prepare a solvent solution in a 150 mL beaker by using 5 mL of Hexane and 3 mL of ethyl acetate Take one plate and spot (small spots) it with the three different standard solutions given. The standard solutions are 2-nitroaniline, 3-nitroaniline, and 4-nitroaniline. The fourth spot will be the unknown sample obtained. 2) 3) Align these spots at 1 cm from the bottom...
Someone please help me with this problem Enantiomers have very similar physical properties, while for diastereomers...
Someone please help me with this problem
Enantiomers have very similar physical properties,
while for diastereomers they can be very different. This fact is
important in the separation or resolution of enantiomers. In the
lecture, we looked at how chiral chromatography is used to separate
enantiomers: first, by reacting them with an optically pure chiral
reagent (i.e., pure R or S) to form a pair of diastereomers, then
separating them using chiral chromatography, and finally detaching
the chiral reagent to...
hi can someone help me with the mechanisms on this! i need major help! 11.Draw the structure of the major organic pr...
hi can someone help me with the mechanisms on this! i need
major help!
11.Draw the structure of the major organic product(s) for each of the following reactions. Indicate the stereochemistry for each reaction when it can be determined. In addition, write 'racemic' if a racemic mixture is formed. 3-chloro-3-methylpentane water ethanol alcohol a. SOCI2 pyridine c. Sec-butanol CH=CH2
Hi can someone help me with question 2? It deals with Rf values and the collected...
Hi can someone help me with question 2? It deals with Rf values
and the collected data is given below!
Results: Rf Values Of Compounds In Solvents Solvents 100% 50% hexanes 75% hexanes 25% ethyl 100% ethyl Hexane 25% hexanes 75% ethyl acetate 50% ethyl Compounds acetate acetate acetate trans-Stilbene 0.125 0.419 0.781 0.594 0.906 9-Fluorenone 0.156 0.677 0.906 0.375 0.843 Benzoic Acid 0.094 0.742 0.813 0.656 0.937 #2.) For each of the solvents used, rank the compounds (trans-stilbene, 9-fluorenone,...
Can someone help me answer these two queations. or one? please dont reply with not vlear photo. i...
can
someone help me answer these two queations. or one? please dont
reply with not vlear photo. it uses up my memberhaip photos and i
have a few left. thanks you appreciated
There are two questions remaining on this exam (#6540 ). Choose only one of the two questions to answer. If you ans Wer both of the questions, then only the first two will be graded. 65) One might argue that structu res found in living things are made...
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 someone help me figure out how to draw these please 3-methylbutan 4-methyl-2-pentanone propanoic acid ethylpropanoate...
can someone help me figure out how to draw these
please
3-methylbutan 4-methyl-2-pentanone propanoic acid ethylpropanoate dimethylethanamide
Can you help me, please? 2-List the four most abundant gases in today`s atmosphere, 3-of the...
Can you help me, please? 2-List the four most abundant gases in today`s atmosphere, 3-of the four most abundant gases in our atmosphere, Which one shows the greatest variation at the earth`s surface? 6- List the two most abundant greenhouse gases in the earth`s atmostphere , What makes them greenhouse gases? 10- a) explain the concept of air pressure in terms of mass of air above some level . B) Why does air pressure alwasy decrease with increasing height...
Can someone please help me? 12. Let A = {1,2,3,4,5,6} and R be the relation on...
Can someone please help me?
12. Let A = {1,2,3,4,5,6} and R be the relation on A whose matrix is [1 0 0 1 1 1 0 1 1 0 0 0 0 1 1 0 0 0 MR= 1 0 0 1 1 1 1 0 0 1 1 1 1 0 0 1 1 1 (a) Use MR to explain why R is an equivalence relation. (b) Compute A/R. (c) Draw the directed graph of (A, R).
Can someone help me with these two 3 and 4 please please biochemistry. Draw a straight...
Can someone help me with these two 3 and 4 please please
biochemistry.
Draw a straight line with negative slope and positive Y- intercept. Indicate ordinate(Y) and abscissa (X) axes. If the unit for X axis is M and for Y-axis is M. min^-1 then the units for slope and y-intercept are and respectively. What was the purpose of titration of glycine versus sodium hydroxide?
Can someone please help me out with the Rf value
PLEASE!!
Thin Layer Chromatography Procedures 1) Prepare a solvent solution in a 150 mL beaker by using 5 mL of Hexane and 3 mL of ethyl acetate Take one plate and spot (small spots) it with the three different standard solutions given. The standard solutions are 2-nitroaniline, 3-nitroaniline, and 4-nitroaniline. The fourth spot will be the unknown sample obtained. 2) 3) Align these spots at 1 cm from the bottom...
Someone please help me with this problem
Enantiomers have very similar physical properties,
while for diastereomers they can be very different. This fact is
important in the separation or resolution of enantiomers. In the
lecture, we looked at how chiral chromatography is used to separate
enantiomers: first, by reacting them with an optically pure chiral
reagent (i.e., pure R or S) to form a pair of diastereomers, then
separating them using chiral chromatography, and finally detaching
the chiral reagent to...
hi can someone help me with the mechanisms on this! i need
major help!
11.Draw the structure of the major organic product(s) for each of the following reactions. Indicate the stereochemistry for each reaction when it can be determined. In addition, write 'racemic' if a racemic mixture is formed. 3-chloro-3-methylpentane water ethanol alcohol a. SOCI2 pyridine c. Sec-butanol CH=CH2
Hi can someone help me with question 2? It deals with Rf values
and the collected data is given below!
Results: Rf Values Of Compounds In Solvents Solvents 100% 50% hexanes 75% hexanes 25% ethyl 100% ethyl Hexane 25% hexanes 75% ethyl acetate 50% ethyl Compounds acetate acetate acetate trans-Stilbene 0.125 0.419 0.781 0.594 0.906 9-Fluorenone 0.156 0.677 0.906 0.375 0.843 Benzoic Acid 0.094 0.742 0.813 0.656 0.937 #2.) For each of the solvents used, rank the compounds (trans-stilbene, 9-fluorenone,...
can
someone help me answer these two queations. or one? please dont
reply with not vlear photo. it uses up my memberhaip photos and i
have a few left. thanks you appreciated
There are two questions remaining on this exam (#6540 ). Choose only one of the two questions to answer. If you ans Wer both of the questions, then only the first two will be graded. 65) One might argue that structu res found in living things are made...
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 someone help me figure out how to draw these
please
3-methylbutan 4-methyl-2-pentanone propanoic acid ethylpropanoate dimethylethanamide
Can someone please help me?
12. Let A = {1,2,3,4,5,6} and R be the relation on A whose matrix is [1 0 0 1 1 1 0 1 1 0 0 0 0 1 1 0 0 0 MR= 1 0 0 1 1 1 1 0 0 1 1 1 1 0 0 1 1 1 (a) Use MR to explain why R is an equivalence relation. (b) Compute A/R. (c) Draw the directed graph of (A, R).
Can someone help me with these two 3 and 4 please please
biochemistry.
Draw a straight line with negative slope and positive Y- intercept. Indicate ordinate(Y) and abscissa (X) axes. If the unit for X axis is M and for Y-axis is M. min^-1 then the units for slope and y-intercept are and respectively. What was the purpose of titration of glycine versus sodium hydroxide?
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