Homework Answers
GC separation will not differ by changing the GC equipment. Following options can be considered to improve separation.
1. optimizing the column temperature,
2. Optimize carrier gas velocity
3. Change the temperature ramp (lowering from the current level)
In general low boiling compound will elute first followed by higher boiling point.
Add Answer to:
Pd/C + H2 Br A GC separation of the two compounds shown above (question 3)) is...
A GC separation of the two compounds shown above (question 3)) is performed at a GC...
A GC separation of the two compounds shown above (question 3)) is performed at a GC column temperature of 100 °C. The resulting chromatogram shows only one peak. Would the GC separation potentially be better if you were to run another GC at a higher temperature? Please explain.
Please explain the concept of chromatographic separation and formulas in the above question. 2) If a...
Please explain the concept of chromatographic separation and
formulas in the above question.
2) If a big centrifuge with the bowl diameter of 1m rotates at
60 rpm, at what speed (rpm) does a smaller centrifuge with a
diameter of 0.5 m need to be operated for achieving the same
separation factor?
(a) 85
(b) 120
(c) 30
(d) 42
3) What is the linear flow rate (superficial velocity in cm/h)
in a chromatographic column of 1.0 cm inner diameter...
In 1984, the first organometallic compounds with H2 as an ?2 ligand were synthesized: M(CO)3(PR3)2(H2) with...
In 1984, the first organometallic compounds with H2 as an ?2 ligand were synthesized: M(CO)3(PR3)2(H2) with M = Mo or W and R = cyclohexyl or isopropyl. These complexes illustrate back-bonding with H2 as a ligand. a. Draw a structure for this molecule (just use R for the substituents on the P atoms). Because the R groups are very bulky, assume that the two PR3 ligands are in a trans configuration. Only one isomer is then possible. Show that this...
1. Select an appropriate type of column for separating these steroids and give the rationale for...
1. Select an appropriate type of column for separating these steroids and give the rationale for your selection. HO HO ОН OH Prednisolone Prednisone 2. You are using a C18 Reverse Phase column and the parameters shown below to separate Acetaminophen, Caffeine, and Benzoic Acid. You observe three peaks in your chromatogram (Huzzah!). Which corresponds to which compound? Explain the rationale behind your assignment. OH C18 REVERSED PHASE COLUMN Acetaminophen HC N H, O Caffeine Column: Legacy L1 Size: 4.6...
What is the SN2 reaction? How does Br attach to which carbon as a nucleophile and...
What is the SN2 reaction? How does Br attach to which carbon as
a nucleophile and why? Difference between Unimolecular or
Bimolecular? How NaBr and H2SO4 work in the
reaction? Why Water/Sulfuric Acid/Brine/Sodium
Hydroxide/Na2SO4 in Extraction? What does
each layer have inside in each step of the separation?
Please help. Due to corona, this is a theoretical lab and I am
very confused.
Chapter 16. The Sy2 Reaction: 1-Bromobutane Handout by Dr. Zhiyong Wang CH3CH2CH2CH, OH NaBr, H2SO4 ©Dr. Wang...
looking for question 3 a,b,c,d,e,f,g,h and i. Thank you it's the same question with different situations....
looking for question 3 a,b,c,d,e,f,g,h and i. Thank you
it's the same question with different situations.
3. Now let's use trial-and-error to see if we can figure out the inheritance pattern of this trait. For EVERY pedigree diagram below and on the following pages, label what you know about the genotype of each individual shown from the information provided in the pedigree and the assumption specified above each one. You MUST label ALL FOUR diagrams separately! Genotypes in these pedigrees...
Ctri Question 3 (20 Marks) Lab 1-Zener Circuits and Applications Theory: Zener diode is designed ...
Ctri Question 3 (20 Marks) Lab 1-Zener Circuits and Applications Theory: Zener diode is designed to operate in reverse conduction. Zener breakdown occurs at a precisely defined voltage, allowing the diode to be used as a voltage reference or clipper. While Zener diodes are usually operated in reverse conduction, they may also be operated in cutoff and forward conduction. There are two different effects that are used in "Zener diodes". The only practical difference is that the two types have...
Exercise 2 Separation of a Mixture Based on Acid-Base Properties One purpose of this exercise is...
Exercise 2 Separation of a Mixture Based on Acid-Base Properties One purpose of this exercise is to learn how to use a separatory funnel to extract a single component away from other compounds in solution. To do so, we will apply the principles of solubility and acid-base behavior you’re seeing in class. One of the compounds is neutral in the acid-base sense. It has no ability to either donate or accept a proton from an aqueous solution, and will remain...
i need help to understand those two question from discussion in this artical please. 3. Take...
i need help to understand those two question from discussion
in this artical please.
3. Take a few minutes to re-read the first four paragraphs of the Discussion section. Explain in your own words the "metabolic suppression hypothesis" proposed by the researchers: what is the hypothesis, and why might it be plausible? WRITE YOUR RESPONSE HERE PLEASE (don't forget the in-text citation, as well as quotation marks and a page number if you are quoting in your answer) This study...
will work with up to 3 partners (similar to a lab group) to prepare a written report which analyzes kinetic data that has been provided to you. All student groups will receive data for the hy...
will work with up to 3 partners (similar to a lab group) to prepare a written report which analyzes kinetic data that has been provided to you. All student groups will receive data for the hypothetical reaction aAlE) products where a is a numeric variable and A is a chemical variable. The reaction therefore has the form of a decomposition reaction, in which a single substance forms one or more new substances. For consistency, all concentrations start out at 1.000...
Please explain the concept of chromatographic separation and
formulas in the above question.
2) If a big centrifuge with the bowl diameter of 1m rotates at
60 rpm, at what speed (rpm) does a smaller centrifuge with a
diameter of 0.5 m need to be operated for achieving the same
separation factor?
(a) 85
(b) 120
(c) 30
(d) 42
3) What is the linear flow rate (superficial velocity in cm/h)
in a chromatographic column of 1.0 cm inner diameter...
1. Select an appropriate type of column for separating these steroids and give the rationale for your selection. HO HO ОН OH Prednisolone Prednisone 2. You are using a C18 Reverse Phase column and the parameters shown below to separate Acetaminophen, Caffeine, and Benzoic Acid. You observe three peaks in your chromatogram (Huzzah!). Which corresponds to which compound? Explain the rationale behind your assignment. OH C18 REVERSED PHASE COLUMN Acetaminophen HC N H, O Caffeine Column: Legacy L1 Size: 4.6...
What is the SN2 reaction? How does Br attach to which carbon as
a nucleophile and why? Difference between Unimolecular or
Bimolecular? How NaBr and H2SO4 work in the
reaction? Why Water/Sulfuric Acid/Brine/Sodium
Hydroxide/Na2SO4 in Extraction? What does
each layer have inside in each step of the separation?
Please help. Due to corona, this is a theoretical lab and I am
very confused.
Chapter 16. The Sy2 Reaction: 1-Bromobutane Handout by Dr. Zhiyong Wang CH3CH2CH2CH, OH NaBr, H2SO4 ©Dr. Wang...
looking for question 3 a,b,c,d,e,f,g,h and i. Thank you
it's the same question with different situations.
3. Now let's use trial-and-error to see if we can figure out the inheritance pattern of this trait. For EVERY pedigree diagram below and on the following pages, label what you know about the genotype of each individual shown from the information provided in the pedigree and the assumption specified above each one. You MUST label ALL FOUR diagrams separately! Genotypes in these pedigrees...
Ctri Question 3 (20 Marks) Lab 1-Zener Circuits and Applications Theory: Zener diode is designed to operate in reverse conduction. Zener breakdown occurs at a precisely defined voltage, allowing the diode to be used as a voltage reference or clipper. While Zener diodes are usually operated in reverse conduction, they may also be operated in cutoff and forward conduction. There are two different effects that are used in "Zener diodes". The only practical difference is that the two types have...
i need help to understand those two question from discussion
in this artical please.
3. Take a few minutes to re-read the first four paragraphs of the Discussion section. Explain in your own words the "metabolic suppression hypothesis" proposed by the researchers: what is the hypothesis, and why might it be plausible? WRITE YOUR RESPONSE HERE PLEASE (don't forget the in-text citation, as well as quotation marks and a page number if you are quoting in your answer) This study...
will work with up to 3 partners (similar to a lab group) to prepare a written report which analyzes kinetic data that has been provided to you. All student groups will receive data for the hypothetical reaction aAlE) products where a is a numeric variable and A is a chemical variable. The reaction therefore has the form of a decomposition reaction, in which a single substance forms one or more new substances. For consistency, all concentrations start out at 1.000...
Most questions answered within 3 hours.
-
The size of your Social Security benefits is determined by:
(select all that apply) Question 1...
asked 47 seconds from now -
Starch polymers are broken down by enzymes into monomers
called:
a.)maltose
b.) dextrins
c.) glucose
d.)...
asked 5 minutes ago -
How does HA (High Availability) work and name two ways it can
help an organization?
asked 7 minutes ago -
Saginaw Company is a garden products wholesale firm. In
December, Saginaw Company expects to sell 26,000...
asked 7 minutes ago -
Write a program for the management of a bookstore in java,
WITHOUT THE USE OF BOOK...
asked 8 minutes ago -
. Consider the Malthusian model and assume Y = zF (L; N) = zLN 1
,...
asked 21 minutes ago -
Reasons that BMW located their manufacturing plant in
Spartanburg South Carolina include ___________
a favorable tax...
asked 22 minutes ago -
17) Complete the following by balancing the chemical
reactions:
(a) H2(g) + N2(g) → NH3(g)
(b)...
asked 23 minutes ago -
When performing a hypothesis test for the ratio of two
population variances, the upper critical F...
asked 29 minutes ago -
You are considering buying a call option for Bernie Bros, a
company that is building a...
asked 28 minutes ago -
How are the concepts of microevolution and macroevolution
linked?
asked 39 minutes ago -
Two vectors, given in unit vector notation, are A = 5i + 4j + 3k
and...
asked 41 minutes ago