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Draw a complete stepwise mechanism for the oxidation of benzil from benzoin using nitric acid.
Draw a complete stepwise mechanism for the oxidation of benzil from benzoin using nitric acid.
I'm not sure if it is possible to make a nitronium ion using only two nitric acids so pls help!
salssss   178   1 Reply
Anonymous
5 months ago
Draw a full and complete mechanism for the following reaction shown below.
Draw a full and complete mechanism for the following reaction shown below.
I need help to solve the following reaction but it doesn't let me post the picture so we're doing it this way:

CH3CH2CH2CH(OCH3)2 + H+ + H2O → CH3[
Anonymous   159   1 Reply
Anonymous
6 months ago
Identify the most significant resonance structure(s).
Identify the most significant resonance structure(s).
[html]Identify the most significant resonance structure(s).
waterman7833   165   3 Replies
8 months ago
A compound (C5H8O) shows IR absorptions at 3600 and 3300 cm-1 . Its 1H NMR spectrum contained single
A compound (C5H8O) shows IR absorptions at 3600 and 3300 cm-1 . Its 1H NMR spectrum contained single
A compound (C5H8O) shows IR absorptions at 3600 and 3300 cm-1
. Its 1H NMR spectrum
contained singlets at δ 1.5, 2.2, and 2.9 (broad) (ppm) in a ratio of 6:1:1. Suggest structure for
this compound
Anonymous   312   1 Reply
A year ago
Which of the following is the correct representation of partial charges at the indicated atoms?
Which of the following is the correct representation of partial charges at the indicated atoms?
[html]Which of the following is the correct representation of partial charges at the indicated atoms?
joshtatum92   507   3 Replies
A year ago
Need help designing an NPK ratio determining formula for a compost business
Need help designing an NPK ratio determining formula for a compost business
At our compost facility, we shred Carbon-rich Materials, Nitrogen-rich Materials, Phosphorus-rich Materials, and Potassium-rich Materials, then measure them in litters for blending to produce organic compost. we use an  Aerated Static Pile (ASP)
kelvin mugittu   442   N/A
A year ago
Theoretical yield
Theoretical yield
The alcohol in "gasohol" burns according to the following equation:
C2H5OH (l) + 3 O2 (g)  2 CO2 (g) + 3 H2O (l)
a) What is the theoretical yield of carbon dioxide when 12.5 g of ethanol, C2H5OH, reacts with 35.0 g of oxygen?
Anonymous   215   1 Reply
Anonymous
2 years ago
Line angle struc utre of ch2ch2ch(oh)ch(ch3)2
Line angle struc utre of ch2ch2ch(oh)ch(ch3)2
line angle struc utre of ch2ch2ch(oh)ch(ch3)2
Anonymous   151   1 Reply
2 years ago
Uranium + Bismuth chain reaction in a nuclear reactor.
Uranium + Bismuth chain reaction in a nuclear reactor.

What will be the chain reaction of Uranium + Bismuth (Combination) in a nuclear reactor?

Prashant S Akerkar
prashantakerkar   353   3 Replies
2 years ago
How would you improve yield/purity using thermodynamics, stoichiometry, or kinetics?
How would you improve yield/purity using thermodynamics, stoichiometry, or kinetics?
How would you determine the success or failure of an experiment using thermodynamics, kinetics, or stoichiometry? How would you improve yield/purity using thermodynamics, stoichiometry, or kinetics, using literature values?

I.e. the synthe
sdgdsg   237   1 Reply
3 years ago
Which of the given descriptions is(are) consistent with biodegradable polymers?
Which of the given descriptions is(are) consistent with biodegradable polymers?
[html]Question 1.Which of the given processes is(are) used in the recycling of soft drink bottles made of PET?

▸ acid hydrolysis

▸ esterification

▸ melting

▸ B and C

▸ none of theseQuestion 2.
RHCP12   255   1 Reply
3 years ago
Which of the given functional groups are common in biodegradable polymers?
Which of the given functional groups are common in biodegradable polymers?
[html]Question 1.Which of the given monomer(s) are used to prepare the polymer Bakelite?

▸ thermoplastics

▸ phenol and formaldehyde

▸ phenol and acetaldehyde

▸ phenol and methanol

▸ none of theseQuest
bundlecrap   250   1 Reply
3 years ago
The strength of the thermosetting polymers like Bakelite is due to ________.
The strength of the thermosetting polymers like Bakelite is due to ________.
[html]Question 1.Which of the choices is the best classification of the polymer Bakelite?

▸ fibers

▸ elastomers

▸ plasticizers

▸ thermoplastics

▸ thermosetting resinsQuestion 2.The streng
tennisalex   223   1 Reply
3 years ago
Which of the choices is the best classification of Nylon?
Which of the choices is the best classification of Nylon?
[html]Question 1.Which of the choices is the best classification of chewing gum?

▸ fibers

▸ elastomers

▸ plasticizers

▸ thermoplastics

▸ thermosetting resinsQuestion 2.Which of the choice
unrendezvous   226   1 Reply
3 years ago
Which of the choices is the best classification of crystalline polymers with high tensile strength?
Which of the choices is the best classification of crystalline polymers with high tensile strength?
[html]Question 1.Which of the choices best describe elastomers?

▸ polymers that can form fibers

▸ polymers that are hard at room temperature

▸ polymers that return to original shape after being stretched

▸ small molecules
Kss612   202   1 Reply
3 years ago
Which of the given polymers is(are) classified as elastomers?
Which of the given polymers is(are) classified as elastomers?
[html]Question 1.Which one of the choices is the best classification of an amorphous polymer that is flexible?

▸ fibers

▸ thermosetting resins

▸ plasticizers

▸ elastomers

▸ thermoplasticsQuestion 2.
Godty   200   1 Reply
3 years ago
Addition of ________ to thermoplastics increases flexibility of the polymer.
Addition of ________ to thermoplastics increases flexibility of the polymer.
[html]Question 1.Which of the given polymers is(are) classified as thermoplastics?

▸ LDPE

▸ PET

▸ HDPE

▸ PVC

▸ all of theseQuestion 2.Addition of ________ to thermoplastics increases flex
karamvir19   188   1 Reply
3 years ago
Which of the given polymers are hard at room temperature and soft at high temperature?
Which of the given polymers are hard at room temperature and soft at high temperature?
[html]Question 1.The melt transition temperature (Tm), is the temperature at which the ________ regions of the polymers become ________.

▸ cry
harry32   183   1 Reply
3 years ago
The glass transition temperature (Tg), is the temperature at which the ________ regions of the ...
The glass transition temperature (Tg), is the temperature at which the ________ regions of the ...
[html]Question 1.________ regions in polymers make the polymer flexible.

▸ Amorphous

▸ Crystalline

▸ Cross linked

▸ B and C

▸ none of theseQuestion 2.The glass transition temperature (
dbomb1   203   1 Reply
3 years ago
________ regions in polymers make the polymer hard and durable.
________ regions in polymers make the polymer hard and durable.
[html]Question 1.Which of the choices best describes crystallites?

▸ linearly arranged chains with disulfide bridges

▸ linearly arranged chains held together by van der Waals forces

▸ hydrogen bonding between chains

▸ cros
prpnum1   188   1 Reply
3 years ago
SBR (styrene-butadiene rubber) is used in the manufacturing of automobile tires. What is the ...
SBR (styrene-butadiene rubber) is used in the manufacturing of automobile tires. What is the ...
[html]Question 1.Neoprene, which is used in gaskets, electrical insulation, and other products, has the structure shown. What is the structure of the monomer?
arunasingh5   189   1 Reply
3 years ago
Which of the given elements is used during the vulcanization of rubber?
Which of the given elements is used during the vulcanization of rubber?
[html]Question 1.Vulcanization of rubber results in ________ between the neighboring chains of the polymer.

▸ hydrogen bonding

▸ salt bridges

▸ disulfide bridges

▸ phosphide bridges

▸ none of theseQue
mktrujillo   197   1 Reply
3 years ago
Which of the given types of polyethylene is used to make Tupperware?
Which of the given types of polyethylene is used to make Tupperware?
[html]Question 1.Which of the given types of polyethylene is used to make trash bags?

▸ HDPE

▸ MDPE

▸ LDPE

▸ A and C

▸ none of theseQuestion 2.Which of the given types of polyethylene is
pixiedust7891   180   1 Reply
3 years ago
Free radical polymerization of ethylene results in ________.
Free radical polymerization of ethylene results in ________.
[html]Question 1.Polymerization of ethylene in the presence of a Ziegler-Natta catalyst results in ________.

▸ MDPE

▸ LDPE

▸ HDPE

▸ B and C

▸ none of theseQuestion 2.Free radical polymeri
bmwprincess   183   1 Reply
3 years ago
Draw a possible segment of isotactic poly(vinyl acetate).
Draw a possible segment of isotactic poly(vinyl acetate).
[html]Question 1.Draw a possible segment of syndiotactic poly(vinyl fluoride).
Nursesn   189   1 Reply
3 years ago
Draw a possible segment of syndiotactic polyacrylonitrile.
Draw a possible segment of syndiotactic polyacrylonitrile.
[html]Question 1.Draw a possible segment of isotactic polyacrylonitrile.
maryanne.jones3   175   1 Reply
3 years ago
Draw a possible segment of atactic polyacrylonitrile.
Draw a possible segment of atactic polyacrylonitrile.
[html]Question 1.A syndiotactic polymer has a ________ configuration.

▸ random

▸ alternating

▸ same

▸ block

▸ graftQuestion 2.Draw a possible segment of atactic polyacrylonitrile.
lindseyw   167   1 Reply
3 years ago
An atactic polymer has a ________ configuration.
An atactic polymer has a ________ configuration.
[html]Question 1.An isotactic polymer has a ________ configuration.

▸ random

▸ alternating

▸ same

▸ block

▸ graftQuestion 2.An atactic polymer has a ________ configuration.

▸ random

▸ a
adotey   179   1 Reply
3 years ago
Which of the choices best describes the polymer shown?
Which of the choices best describes the polymer shown?
[html]Question 1.Which of the choices best describes the polymer shown?
lindseyw   186   1 Reply
3 years ago
Which of the choices best describes the polymer shown?
Which of the choices best describes the polymer shown?
[html]Question 1.Which of the given statements is(are) true about linear polymers?

▸ they are highly branched

▸ they may be slightly branched

▸ they can have no branching

▸ A and B

▸ B and CQuestion 2
ssi15   186   1 Reply
3 years ago
What polymer is used in rope?
What polymer is used in rope?
[html]Question 1.What polymer is used in bicycle helmets?

▸ Nylon 6

▸ Teflon

▸ Kevlar

▸ Lexan

▸ Nylon 6,6Question 2.What polymer is used in rope?

▸ Nylon 6

▸ Teflon

▸ Kevlar

▸ Lexan
harry32   164   1 Reply
3 years ago
What is the polymer that is used in bullet-proof vests?
What is the polymer that is used in bullet-proof vests?
[html]Question 1.Provide the structure of a region of the polymer that is produced when isocyanate, shown below, is treated with 1,4-butanediol.
rbayla   165   1 Reply
3 years ago
What monomer(s) would produce the polymer shown?
What monomer(s) would produce the polymer shown?
[html]Question 1.What is the classification of the polymer shown?
JSmith1   182   1 Reply
3 years ago
________ polymers are formed under conditions in which the individual monomers react with each other ...
________ polymers are formed under conditions in which the individual monomers react with each other ...
[html]Question 1.What are the monomers in a polyurethane?

▸ carboxylic acid and amine

▸ diisocyanate and diol

▸ isocyanate and alcohol

▸ amide and alcohol

▸ ester and amineQuestion 2.____
hardy7luver   197   1 Reply
3 years ago
Which of the given polymerization processes best describes the formation of polyisobutylene?
Which of the given polymerization processes best describes the formation of polyisobutylene?
[html]Question 1.Which of the given polymerization processes best describes the formation of polyurethanes?

▸ step growth addition

▸ chain growth addition

▸ step growth condensation

▸ chain growth condensation

▸ none of t
swimchk13   166   1 Reply
3 years ago
Which of the given polymerization processes best describes the formation of polycarbonates?
Which of the given polymerization processes best describes the formation of polycarbonates?
[html]Question 1.Which of the choices are examples of step growth polymerization?

▸ cationic polymerization

▸ condensation polymerization

▸ anionic polymerization

▸ radical polymerization

▸ none of these
nrod1120   166   1 Reply
3 years ago
Which of the choices are examples of chain growth polymerization?
Which of the choices are examples of chain growth polymerization?
[html]Question 1.What is not an example of a small molecule that is released in a condensation reaction?

▸ nitrogen gas

▸ water

▸ benzene

▸ carbon dioxideQuestion 2.Which of the choices ar
pattytcakes   176   1 Reply
3 years ago
Identify the type of compound used to make safety goggles.
Identify the type of compound used to make safety goggles.
[html]Question 1.What monomers form Lexan?

▸ adipic acid and Bisphenol-A

▸ phosgene and Bisphenol-A

▸ terephthalic acid and 1,6-hexandiamine

▸ phosgene and 1,6-hexandiamine

▸ adipic acid and 1,6-hexandiamine
rsteel   164   1 Reply
3 years ago
What monomers form Nylon 6,6?
What monomers form Nylon 6,6?
[html]Question 1.What monomers form PET?

▸ phosgene and ethylene glycol

▸ terephthalic acid and carbamate

▸ urethane and carbamate

▸ terephthalic acid and propylene glycol

▸ terephthalic acid and ethylene glycol
nrod1120   176   1 Reply
3 years ago
Provide the structure of a region of the polymer that is produced when the given monomers are ...
Provide the structure of a region of the polymer that is produced when the given monomers are ...
[html]Question 1.Provide the structure of a region of the polymer that is produced when phosgene is treated with 3,3-dimethyl-1,5-pentanediol.
doggerfresh   179   1 Reply
3 years ago
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