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April 20, 2014

Search: polymer-Crosslinking Chemistry

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polymer-Crosslinking Chemistry
Explain why a polymer such as polybutadiene can be cross-linked, however a polymer such as polyethylene cannot be cross-linked. Make reference to what it is about the chemistry of the repeating units that allows for the formation of cross-links.
Saturday, December 29, 2012 at 11:07am by Anonymous

Chemistry
How is the water drawn into the polymer? How is the polymer held in the polymer? What are the intermolecular bonds between the polymer and the water? A diagram again may help. What factors affect the effectiveness of SAP?
Monday, June 4, 2012 at 12:58am by Anushka Sharma

polymer science
its possible to convert the commercial polymer into nano polymer and its affact any property of polymer
Wednesday, February 16, 2011 at 12:56am by pradee

polymer science
its possible to convert the commercial polymer into nano polymer and its affact any property of polymer
Wednesday, February 16, 2011 at 1:16am by pradee

polymer science
how the strength polymer need for polymer electrolyte prepatation
Thursday, December 16, 2010 at 4:41am by pradee

organic chemistry
what characteristics must a molecule have to be part of a) a condensation polymer b) a addition polymer
Friday, March 20, 2009 at 5:00pm by Chelsea

Chemistry
In polymer chemistry, it is often said that obtaining a polymer with certain desired physical properties is often more a problem of engineering than of chemistry. Why is this the case? bgfhftghgfgfnhgf
Friday, September 29, 2006 at 9:23pm by Lindz

Chemistry
In polymer chemistry, it is often said that obtaining a polymer with certain desired physical properties is often more a problem of engineering than of chemistry. Why is this the case?
Thursday, September 28, 2006 at 8:43pm by Lindz

Chemistry
In chemistry, how is a monomer related to a polymer? Think of a chain: Each link is a monometer, as the links are joined, you have a chain which represents the polymer.
Monday, July 16, 2007 at 7:18pm by Winry

chemistry
Degree of Polymerization is calculated as the ratio of the given weight of the polymer to the weight of the single monomer in the polymer chain.
Sunday, December 23, 2012 at 8:37am by Anonymous

polymerization of alchohol
CH2=CH-CH-OH | CH3 when the above compound undergo polymerizaing What is the polymer and the structure of the polymer obtained drawing should show three monomer unit. also include what type of polymerization involved in forming this polymer
Thursday, March 1, 2007 at 12:51pm by bonita

Chemistry
In the laboratory exercise "Preperation and Properties of Polymers", polyvinyl alcohol is dissolved in water and then reacted with borax (Na2B4O710H2O) in water. Which of the following are expected results of this reaction? True or False? 1. Polyvinyl alcohol became graft ...
Friday, April 22, 2011 at 6:57pm by Chem

polymer science
how can we get copolymer from polymer give the reaction condition and how can its possible and the equation for the copolymerization.
Saturday, December 4, 2010 at 4:08am by pradee

intergrated science
1.what is polymer 2.give two examples of polymer
Wednesday, February 11, 2009 at 1:34pm by ampadu

Chemistry 2
In a study designed to prepare new gasoline resistant coatings, a polymer chemist dissolves 6.053g of poly in enough water to make 100.0 mL of solution. At 25C, the osmotic pressure of this solution is 0.272 atm. What is the molar mass of the polymer sample?
Friday, March 26, 2010 at 6:13pm by Mike

chemistry
I submitted this question earlier... can anyone help me pls. This question is about the polymer made by polymerizing this compound: _ CH2=CH-CH-OH _ | _ CH3 Please identify the monomer unit - there should be 3... also, what type of polymerization is involved in forming this ...
Monday, February 5, 2007 at 5:51pm by david

CHEMISTRY: polymers
Polymethylpentene are there any safety concerns, toxicity concerns about the polymer? any environmently concerns? is the monomer toxic, is the polymer toxic?
Saturday, April 4, 2009 at 11:10am by Brad

Material science/ Mechanics
A cube polymer matrix is subjected to elastic deformation in compression by 10 N applied force. The cube is deformed by 20% of its original shape. The cube side has a length of 1 m. If you assume that the polymer has the intrinsic properties of rubber, find the storage shear ...
Sunday, September 8, 2013 at 3:37pm by Katy

Chemistry
I have one more question DrBob, I have draw a structure of this polymer CH2=CH-CH-OH ' CH3 and identify the monomer units. Would the mononer unit be this: CH2-CH-CH-O ' CH3 AND WOULD THIS POLYMERIZATION BE A CONDENSATION TYPE? Paula--I am not an organic chemist but this doesn'...
Tuesday, February 20, 2007 at 1:59pm by Paula

chemistry
This question is about the polymer made by polymerizing this compound: CH2=CH-CH-OH | CH Please identify the monomer unit - there should be 3... also, what type of polymerization is involved in forming this polymer? sorry - the compound is.... CH2=CH-CH-OH ________| _______CH3
Monday, February 5, 2007 at 10:49am by david

chemistry
A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 in the polymer at 10...
Saturday, June 1, 2013 at 6:20pm by Anony mous

chemistry
A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 in the polymer at 10...
Saturday, June 1, 2013 at 6:20pm by Anony mous

chemistry
A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 in the polymer at ...
Friday, May 31, 2013 at 11:22pm by Anonymous

Chemistry
a) A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 in the polymer at...
Sunday, June 2, 2013 at 7:35am by Anon

Chemistry
a) A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 in the polymer at...
Sunday, June 2, 2013 at 7:35pm by Anon

Honors Chemistry
"Would it be possible to have an addition polymer synthesized from a monomer that has only single bonds? Why or why not?" ==> I know that an addition polymer can only be synthesized from a monomer that has double bonds, but my textbook did not explain why. Can someone ...
Thursday, May 20, 2010 at 7:29pm by Emily

Chemistry
Is Amylose different than Amylopectin in that Amylose is a polymer of a-D-glucose but amylopectin is a polymer of b-D-glucose? Thanks for any help offered. Carbohydrates that are called reducing sugars are those that__ a. have OH groups that are easily oxidized. b. form ...
Monday, August 9, 2010 at 9:42pm by Bobby

chemistry
Is the ritalin molecule a polymer?
Friday, November 5, 2010 at 7:13pm by Alex

chemistry
I couldn't find a web site the specifically gave you that polymer.
Friday, May 9, 2008 at 8:42pm by DrBob222

polymer science
inhibiters are to the monomer for the polymer preparation we need to remove the inhibiters how can remove the inhibiters
Sunday, November 14, 2010 at 5:15am by prade

polymer science
In the case of styrene: "..purification is performed in order to remove inhibitors and impurities, which can have a detrimental effect on the (polymerization) reaction. Styrene is purified by passing the monomer through a column of activated basic aluminum oxide and by this ...
Sunday, November 14, 2010 at 5:15am by drwls

chemistry - pick a polymer
I need to pick a polymer for my science project. It has to be organic and preferably simple. Some that are already taken are: polyethene, polystyrene, PVC, polyacrylonitrile, DDT , nylon.. Thanks a lot it has been really hard for me to find something. I don't know if you must ...
Tuesday, September 26, 2006 at 6:18pm by Annie

chemistry
Define the term 'polymer' and then name two examples of naturally occurring polymers.
Tuesday, May 19, 2009 at 3:52pm by Coco

physics
1. Suppose a freely orienting chain with 1000 segments each of length 7 AO is subjected to a force on its ends of 10-5 N. What will be the average separation of the chain ends? 2. How large a force is needed to elongate the following piece of polymer to a length of 2.54 cm? ...
Thursday, December 20, 2007 at 8:09pm by nooon

seventh grade science
Oh dear, oh dear! Science is definitely not my field, but I will try to explain! monome = a small molecule (of low molecular weight) that can react or bond with other molecules to form a very large molecule, called polymer Some examples are hydrocarbon, acrylic, amino acids. ...
Saturday, October 25, 2008 at 1:12pm by SraJMcGin

chemistry
Draw three repeating units of the condensation polymer made from ethanedioic acid and ethanediol.
Sunday, May 11, 2008 at 12:45am by Lindsey

chemistry
How do we calculate the Xi column when trying to find the molecular weight for polymer. I am given several ranges and means for each
Tuesday, February 28, 2012 at 1:20pm by Ms. Sue please help

chemistry
Note: I neglected to say that there are several hundred or thousands repeated units that make up the giant polymer molecules.
Tuesday, May 19, 2009 at 3:52pm by GK

chemistry
Draw three repeating units of the condensation polymer made from ethanedioic acid and ethanediol. if anyone has a weblink that illustrates this may you please send it?
Friday, May 9, 2008 at 8:42pm by Mable

Chemistry
A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 at 10 atm is 6.97 x ...
Saturday, January 12, 2013 at 10:24am by Ankur

chemistry
please can u help i need to a structure of a polymer and i dentify the monomer unit and include three monomer units,from the compound CH2=CH-CH-OH CH3 AND STATE THE POLYMERIZATION INVOLVED IN FORMING THE POLYMER,please help i have tried ,but i cant make head nor tail of it The...
Tuesday, March 6, 2007 at 9:03am by jane

chemistry
a polymer is a molecule with repeating units usually joined with covalent chemical bonds. 2 examples of naturally occurring polymers are proteins & starches.
Tuesday, May 19, 2009 at 3:52pm by Kate

chemistry
the average molar mass of polyethylene when 4.40 g of the polymer is dissolved in benzene to produce 200.0 mL of solution and the osmotic pressure is found to be ...
Monday, April 2, 2012 at 2:18am by Anonymous

chemistry
A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 at 10 atm is 6.97 x ...
Saturday, January 12, 2013 at 4:15pm by Anonychem

Chemistry Biological Compounds
Can you help me with these questions Directions: Either it's a protein, nucleic acid, carboydrate, or a lipid 1.Plymers formed from amino acids I2. s a polymer
Wednesday, February 4, 2009 at 9:29pm by Kimy

Chemistry
Vinyl chloride (H2C=CHCl), the starting material from which PVC polymer is made, has a Henry's-law constant of 0.091mol/(L⋅atm) at 25 ∘C.
Sunday, June 13, 2010 at 1:09pm by ahia

Chem
CH2 = CH - CH - OH ............| ...........CH3 Draw the structure of this polymer and identify the monomer unit. Should show three monomer unit State the type of polymerization involved in forming this polymer Hi Lacey, do you know the answers for part a, of question 5 at all...
Monday, March 12, 2007 at 2:23pm by Lacey

CHEMISTRY: polymers
Try some of these sites: http://www.google.com/search?q=polymer&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a Sra
Saturday, April 4, 2009 at 11:10am by SraJMcGin

chemistry
Is teflon a dimer? I know that it is an addition polymer, but I don't know if that classifies it as a dimer. No. A dimer is two monomers hooked together. Teflon is a polymer;i.e., many monomers hooked together. I tried to find the molar mass of teflon was was unable to do so. ...
Tuesday, May 1, 2007 at 5:03pm by DavidG

Solar energy please help
1-Consider an organic solar cell consisting of a TiO2 semiconductor with an ionization energy 7.8eV and a polymer with an electron affinity 3.4eV. Which of the followning band diagrams corresponds to the organic solar cell. The band gap of TiO2 is 3.5eV. (a) (b) 2-What is the ...
Friday, November 29, 2013 at 11:23pm by UNO

chemistry
What is polymerization and what type is involved in forming a polymer when I have CH3 N CH O C and NH3 Can any one help please Polymerization is the chaining of monometers. Look for the double bond, it breaks, and forms a chain.
Sunday, February 25, 2007 at 2:25pm by bex

chemistry
I believe it's the methyl ester of aspartic acid and phenylalanine but check me out on that. Hydrolysis of aspartame produces methanol (which is part of the controversy surrounding its use). I would not call aspartame a polymer.
Saturday, May 10, 2008 at 10:54pm by DrBob222

Chemistry
Could anyone tell me what the structure of this polymer is ( I need to draw it), I also need to identify three monomer units, CH2 = CH - CH - OH ( CH3 Thanks
Monday, February 19, 2007 at 2:38pm by Ben

chemistry
find the average molar mass of polyethylene when 4.40 g of the polymer is dissolved in benzene to produce 200.0 mL of solution and the osmotic pressure is found to be7.60 torr ant 25 celcious Degree.
Monday, April 2, 2012 at 2:19am by Anonymous

chemistry
(a) A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 at 10 atm is 6....
Friday, January 11, 2013 at 1:17pm by schoolgirl

Chemistry
(a) A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 at 10 atm is 6....
Friday, January 11, 2013 at 10:48pm by Ling

Chemistry
A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 at 10 atm is 6.97 x...
Friday, January 11, 2013 at 11:36am by selly

chemistry
(a) A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 at 10 atm is 6....
Saturday, January 12, 2013 at 8:09am by ani

Chemistry
(a) A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 at 10 atm is 6....
Saturday, January 12, 2013 at 5:24pm by markus

CHEMISTRY
(a) A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 at 10 atm is 6....
Sunday, January 13, 2013 at 6:14am by ani

Chemistry
Burning an empty Styrofoam container results in volumes of black sooty flames. On the basis of this observation alone, to what class of hydrocarbons would you suspect a component of the polystyrene polymer found in Styrofoam belongs? Explain.
Wednesday, February 8, 2012 at 12:53am by Morgan

Chemistry
Burning an empty Styrofoam container results in volumes of black sooty flames. On the basis of this observation alone, to what class of hydrocarbons would you suspect a component of the polystyrene polymer found in Styrofoam belongs? Explain.
Wednesday, February 13, 2013 at 6:41pm by Morgan

Dr.Bob - Question
I think the biochemistry field is wide open and will remain so, as will polymer chemistry. I have two ex students in enviromental chemistry, and both love it (I dont think I would, too much repetitive lab testing). Biomedical Science is a very related degree, and is wide open...
Saturday, June 27, 2009 at 6:04pm by bobpursley

chemistry
Tricky one- my math fails here (a) A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The ...
Friday, January 11, 2013 at 10:11am by mangozier

polymer-Crosslinking Chemistry
butadiene is left with a second double bond when it polymerizes, making cross chains possible. Study these two images. http://upload.wikimedia.org/wikipedia/commons/c/c6/1,3-Butadiene_Polymerization.PNG http://www.google.com/imgres?imgurl=http://upload.wikimedia.org/wikipedia/...
Saturday, December 29, 2012 at 11:07am by bobpursley

Correction
by I2 it supposed to say is a polymer
Wednesday, February 4, 2009 at 9:29pm by Kimy

science
a polymer of sugar molecules is called
Monday, January 11, 2010 at 6:27pm by Anonymous

science
How can starch be converted into a polymer
Friday, January 22, 2010 at 4:33am by Arewa james

Chem (monomers)
Hi I'm having major problems with monomers in proteins. One what is a monomer Two what is it doing in a protien? Much thanks, Rosie A "monomer" is a single unit of a polymer and a polymer is just a bunch of monomers (single units) hooked together. Teflon is a polymer. It is ...
Sunday, April 15, 2007 at 2:36pm by Rosie

biology
what is the chemical reaction that produces a polymer for of a biomolecule?
Wednesday, September 12, 2007 at 8:02pm by Justine

Jack
how does cross linking alter the properties of a polymer?
Thursday, February 28, 2008 at 11:58pm by chemistry

polymer science
You need to make the question clearer than this.
Thursday, December 16, 2010 at 4:41am by Dr Russ

chemistry
1. If a gaseous sample contains 73% N2 by volume, what is the solubility of N2 in water at 25C and 1.0 atm (kH in H2O at 25C = 7.0 10-4 mol/Latm)? 2. Calculate the vapor pressure of a solution of 0.60 mol of cholesterol in 4.5 mol of toluene at 32C. Pure toluene has a vapor...
Monday, January 31, 2011 at 3:49pm by Ashley

biology
what is the chemical reaction that produces a polymer form of a biomolecule?
Wednesday, September 12, 2007 at 8:05pm by Jussie

seventh grade science
what is a monomer what is a polymer what is the structure of a protein
Saturday, October 25, 2008 at 1:12pm by david

chem
What is the structure of the addition polymer that results from polymerization of 2-chloropropene.
Thursday, October 7, 2010 at 11:17pm by mark

Science
I need an idea for something cool to do with a polymer pellet?
Monday, November 14, 2011 at 6:13pm by Anonymous

science
Clay is a plastic material. Does thia imply that it is a polymer
Wednesday, June 13, 2012 at 11:02am by kratika

LIVING ENVIRONMENT
what does this polymer in the diagram most likely contain
Tuesday, February 12, 2013 at 9:14pm by mika

science
A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 at 10 atm is 6.97 x ...
Saturday, January 12, 2013 at 3:44am by harry

Polymers
(C6 H12)n The polymer is built up of C6H12 molecules
Sunday, April 5, 2009 at 10:13am by drwls

science material
Wikipedia has an excellent article on this. In detail depends on the polymer.
Thursday, May 31, 2012 at 6:29am by bobpursley

Organic Chemistry
Does anyone know where I might find a step-by-step reaction mechanism for a polymer condensation reaction involving Hexamethylenediamine with Adipoyl Chloride (thus synthesizing Nylon 66)? If not, can anyone help list the steps that take place and why? Any help would be ...
Sunday, April 26, 2009 at 1:01am by Zach

chemistry
The empirical formula is C3H8. The polymer is (C3H8)n. 3.091E5/empirical mass = n.
Tuesday, January 1, 2013 at 4:16am by DrBob222

science
Air is a mixture. Hydrogen and Iron are elements. Nylon is manufactured as a polymer.
Saturday, October 20, 2007 at 4:47pm by bobpursley

Biology
Which of the following is a polymer of an amino sugar? a.) cellulose b.) chitin c.) glycogen d.) starch
Tuesday, September 7, 2010 at 6:06pm by Anna

Chemistry
Vinyl chloride (H2C=CHCl), the starting material from which PVC polymer is made, has a Henry's-law constant of 0.091mol/(L.atm) at 25 C. What is the solubility of vinyl chloride in water (in mol/L) at 25C and a partial pressure of 0.90 atm? Thank you in advance
Sunday, June 13, 2010 at 1:09pm by Deborah

Chemistry
Hi you guys please help me with my chemistry homework, i need to find all these items and take them to my class in a ziploc bag *a hydrocarbon with a molecular mass greater than 100g/mol *2 porpanol *an aromatic compound(not the common usage of "aromatic" the chemistry use. *a...
Sunday, February 4, 2007 at 3:28pm by Desperate

Dr.Bob - Question
Thanks for your responses, Dr.Bob and bobpursley. I'm not too good in the area of biochemistry unfortunately. I was thinking about Analytical, Organic, Environmental, and Inorganic Chemistry. I haven't taken any inorganic classes in my school though, because they don't offer ...
Saturday, June 27, 2009 at 6:04pm by ~christina~

Chemistry
Assume that the LHMP is enclosed in a transparent polymer stucture. a. How will the gases inside LHMP be affected by hot days and cool nights? b. What design features might be incorporated in the LHMP to reduce those heating and cooling effects? I know that gases expand in ...
Sunday, January 13, 2013 at 11:45pm by Sara

chemistry
A good place to start is the Wikipedia page http://en.wikipedia.org/wiki/Polymer The polymerisation syntheses are then largely divided between condensation polymers http://www.materialsworldmodules.org/resources/polimarization/4-condensation.html and free radical (or addition...
Friday, August 13, 2010 at 12:36am by Dr Russ

biology
Monomer of the polymer nucleic acid (found in DNA and RNA, for example). Composed of a phosphate, a sugar, and a nitrogenous base.
Tuesday, March 30, 2010 at 3:08pm by TheQuestion

chemistry
A polymer molecule is one that is made of repeated segments . The repeated segments are smaller molecules (or major parts of them) that are identical, or combinations of two kinds of molecules that become parts of the repeated unit. Examples that occur naturally are DNA, ...
Tuesday, May 19, 2009 at 3:52pm by GK

chemistry
Please can someone help me before i pull all my hair out i've been struggling with this for about a week CH2=CH-CH-OH ________' _______CH3 i need to polymerize this compound and draw the structural formula it needs to contain three monomer units and i need to state the ...
Thursday, March 1, 2007 at 12:27pm by sarah

science
Lipids: Not a polymer because _ __x's energy than carbs Saturated= Unsaturated= Nucleic Acids: RNA= DNA= Carbohydrates: Building blockks
Saturday, January 26, 2013 at 6:00pm by Katie

polymer
how can we set up column for monomer purification give the minimum lenth and diametter for the column.
Monday, December 20, 2010 at 5:43am by pradee

polymer chemistry
A spherical rubber balloon has an initial thickness of 0.45mm, and diameter 250mm. Final diameter of 1000mm. Find final thickness, true stress in the plane of the balloon wall, Air pressure required. (Assume rubber is idea and obeys Guassian statistics, and take the shear ...
Wednesday, May 5, 2010 at 11:31am by nick

Chemistry
Organic hydrogenation reactions, in which H2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. In the simplest case, ethene (C2H4) and H2 form ethane (C2H6). If 124 kJ is given off per mole of C2H4 reacting, how much heat is ...
Tuesday, October 19, 2010 at 11:52pm by Jo

Chemistry
Organic hydrogenation reactions, in which H2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. In the simplest case, ethene (C2H4) and H2 form ethane (C2H6). If 124 kJ is given off per mole of C2H4 reacting, how much heat is ...
Friday, October 22, 2010 at 9:29pm by HELP !

chemistry
Here are several sites that discuss condensation and addition polymers although I think all but two relate the first. Anyway, this should get you started. I note that some of them use generalized R-COOH etc type of reactions and you can vary the R. http://en.wikipedia.org/wiki...
Friday, May 9, 2008 at 8:12pm by DrBob222

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