Please help answer questions for esterification pre-lab.
Homework Answers
4. Bio samples are very less soluble or partly soluble in water (they are hydrophobic in nature) and they are readily soluble in organic solvents like DMSO that's the reason for prep purification of biosample we will use DMSO instead of water.
5. KMnO4 oxidise the alcohol to acid or ketone and it will appear on TLC.
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Please help answer questions for esterification pre-lab.
4. Why do we use DMSO to prep the...
Post lab questions for chromatography and melting point lab. i have a few ideas of what the answers to these questions s...
Post lab questions for chromatography and melting point lab. i
have a few ideas of what the answers to these questions should be,
but I would like to double check. if anyone can help me, that would
be so awesome. Thank you!
A student cools a sample in a capillary tube after melting it. Upon attempting to determine the melting point on the same sample, the student does not obtain the same melting point. Why? A student places his TLC...
9 Pre-Lab Questions 1. Why can you use a calorimeter to study the exchange of heat? EXPERIMENT A ...
9 Pre-Lab Questions 1. Why can you use a calorimeter to study the exchange of heat? EXPERIMENT A calorimeier is a device u s eol to measure hot of roactisn th lainer wn th vr meni o insulated wall's to prevent hret exchange he enviran 2. Why is specific heat an intensive property? energy at o particular temperature 'is the some Its 9uanhhy towhich no physical alimen sian is agsian eof Nomaler heuw mach alaminunh, Is abiliy to aborb heat...
i need help with those questions please. this is microbilogy lab class. 1-what do we do...
i need help with those questions please. this is microbilogy lab class. 1-what do we do if we find more than one bacteria in a plate? 2-what do we put slide containing bacteria under bright microscope?
I need help with my pre and post lab questions. The three compounds below were spotted...
I need help with my pre and post lab questions.
The three compounds below were spotted on a TLC plate and developed to give the TLC plate shown. Which compound corresponds to which spot? Calculate the Rf value for spot B in the TLC plate shown above. When using polarity to determine the relative rates at which organic compounds travel up the TLC plate, we are considering compounds of similar molecular weight. It should also be noted that Rf values...
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...
PRELAB Pre-Lab Questions: (To be submitted at the beginning of lab) . Summary of the procedure...
PRELAB Pre-Lab Questions: (To be submitted at the beginning of lab) . Summary of the procedure in words. Should be sufficiently detailed that someone who has not read this lab could perform the lab properly. If you need more room please continue on the back of this page. 2. Fill in the following before meeting for lab: a) Since you are measuring pressure in mmHg. , which value of R should you use? b) Suppose you have a stoppered flask...
Hello I need some help with these organic chem pre lab questions for the extraction of...
Hello
I need some help with these organic chem pre lab questions for
the extraction of trimyristin from nutmeg
4.(1) What technique is used to ensure as much as possible trimyristin is extracted from the nutmeg? 5. (6 pts.) Indicate whether the following statements are true (T) or false (F) AND correct any of the false statements. a. The functional group present in trimyristin is a carboxylic acid group b. Pure trimyristin is a liquid at room temperature. c. The...
Please answer the Pre-Lab questions regarding calorimetry. Suggest possible ways to improve the calorimeter, including materials...
Please answer the Pre-Lab questions regarding calorimetry.
Suggest possible ways to improve the calorimeter, including materials that could be used, and different approaches that would lead to the capture of the most heat from the burning peanut. List your responses here and on the board. (Post-lab Question 3) Plan and design an improved calorimeter. Your team should make a sketch of your idea here and in your notebooks. Construct (build) your improved calorimeter using the materials provided. Test your new...
Pre-lab questions 1. What is the basis for separation of compounds using distillation? Why is it...
Pre-lab questions 1. What is the basis for separation of compounds using distillation? Why is it possible to separate ethanol from water using distillation? 2. What is the difference between simple and fractional distillation? Why does fractional distillation give a much better separation of substances? 3. When is vacuum distillation used, and why is it used? 4. What is an azeotrope? How does this apply to the separation we are doing in this experiment? 5. What intermolecular forces are being...
Please help thank you PRE-LAB 6 The Hill Reaction Pre-laboratory Assignment Directions: is not complete at...
Please help thank you
PRE-LAB 6 The Hill Reaction Pre-laboratory Assignment Directions: is not complete at the beginning of lab, the student will be unable to participate in Questions: TYPE the answers to the following questions and turm in BEFORE lab begins. If pre-lab the lab session. 1.(2pts) While doing this experiment, it will be important to keep everything on ice. Why is it important to keep everything cold? What might happen if the proteins are warm temperature? ed to...
Post lab questions for chromatography and melting point lab. i
have a few ideas of what the answers to these questions should be,
but I would like to double check. if anyone can help me, that would
be so awesome. Thank you!
A student cools a sample in a capillary tube after melting it. Upon attempting to determine the melting point on the same sample, the student does not obtain the same melting point. Why? A student places his TLC...
9 Pre-Lab Questions 1. Why can you use a calorimeter to study the exchange of heat? EXPERIMENT A calorimeier is a device u s eol to measure hot of roactisn th lainer wn th vr meni o insulated wall's to prevent hret exchange he enviran 2. Why is specific heat an intensive property? energy at o particular temperature 'is the some Its 9uanhhy towhich no physical alimen sian is agsian eof Nomaler heuw mach alaminunh, Is abiliy to aborb heat...
I need help with my pre and post lab questions.
The three compounds below were spotted on a TLC plate and developed to give the TLC plate shown. Which compound corresponds to which spot? Calculate the Rf value for spot B in the TLC plate shown above. When using polarity to determine the relative rates at which organic compounds travel up the TLC plate, we are considering compounds of similar molecular weight. It should also be noted that Rf values...
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...
PRELAB Pre-Lab Questions: (To be submitted at the beginning of lab) . Summary of the procedure in words. Should be sufficiently detailed that someone who has not read this lab could perform the lab properly. If you need more room please continue on the back of this page. 2. Fill in the following before meeting for lab: a) Since you are measuring pressure in mmHg. , which value of R should you use? b) Suppose you have a stoppered flask...
Hello
I need some help with these organic chem pre lab questions for
the extraction of trimyristin from nutmeg
4.(1) What technique is used to ensure as much as possible trimyristin is extracted from the nutmeg? 5. (6 pts.) Indicate whether the following statements are true (T) or false (F) AND correct any of the false statements. a. The functional group present in trimyristin is a carboxylic acid group b. Pure trimyristin is a liquid at room temperature. c. The...
Please answer the Pre-Lab questions regarding calorimetry.
Suggest possible ways to improve the calorimeter, including materials that could be used, and different approaches that would lead to the capture of the most heat from the burning peanut. List your responses here and on the board. (Post-lab Question 3) Plan and design an improved calorimeter. Your team should make a sketch of your idea here and in your notebooks. Construct (build) your improved calorimeter using the materials provided. Test your new...
Pre-lab questions 1. What is the basis for separation of compounds using distillation? Why is it possible to separate ethanol from water using distillation? 2. What is the difference between simple and fractional distillation? Why does fractional distillation give a much better separation of substances? 3. When is vacuum distillation used, and why is it used? 4. What is an azeotrope? How does this apply to the separation we are doing in this experiment? 5. What intermolecular forces are being...
Please help thank you
PRE-LAB 6 The Hill Reaction Pre-laboratory Assignment Directions: is not complete at the beginning of lab, the student will be unable to participate in Questions: TYPE the answers to the following questions and turm in BEFORE lab begins. If pre-lab the lab session. 1.(2pts) While doing this experiment, it will be important to keep everything on ice. Why is it important to keep everything cold? What might happen if the proteins are warm temperature? ed to...
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