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April 19, 2014

Search: Organic Chemistry-pls check

Number of results: 138,219

Organic Chemistry-pls check
I'm not an organic chemist but from what I can read I think the answer is a.
Sunday, February 24, 2008 at 3:14pm by DrBob222

Organic Chemistry-pls check
"A" was correct
Sunday, February 24, 2008 at 3:14pm by K

Organic Chemistry-pls check
I think that it must be "a", too, when I rethought it. Thank you.
Sunday, February 24, 2008 at 3:14pm by K

organic chemistry
pls answer this
Friday, September 23, 2011 at 2:12am by Anonymous

chemistry
Pleas does any one know how to calculate the number of isomers of an organic compound. Any formula pls
Friday, March 28, 2014 at 2:21pm by ogboyeb

Chemistry (URGENT)
I have a test soon. If you can help me with these questions, that would be great. 1. Define and describe the following. a)Alkaline - metal - base b)Corrosive - burn/eat away - acid c)Caustic - harsh - both? (acid + base) d)Low pH - 0-6.99 - acid Please check my answers and ...
Wednesday, March 3, 2010 at 2:54am by John

Chemistry :'(
(d) Which of the following sets of quantum numbers is not permitted? Select all that apply. 2,1,1,-1/2 1,1,0,-1/2 2,-1,1,-1/2 3,2,1,1/2 Pls pls pls help me :( x
Sunday, November 18, 2012 at 9:03am by Anonymous

Organic Chemistry-pls check
Which is the major product from acid catalyzed hydration (addition of water) of 2-methyl-2-pentene? a) 2-methyl-2-pentanol b) 2-methyl-1-pentanol c) 2-methyl-3-pentanol d) 3-methyl-3-pentanol answer: "c": 2-methyl-3-pentanol ???
Sunday, February 24, 2008 at 3:14pm by K

Organic substances
Is adhesive tape organic or inorganic? Also are shoes organic? I think they might, be but Im not so sure. Are paper clips organic? They are made of some type of metal, but I don't think they are organic. Is an mp3 organic?
Saturday, October 2, 2010 at 6:52pm by Anonymous

Organic Chemistry
1. Why is diethyl ether a good choice for an organic solvent? 2. Why doesnt the neutral organic compound dissolve in 1.5 M sodium hydroxide solution?
Tuesday, November 4, 2008 at 12:15am by Dora

chemistry
I don't know what you've been told about the K but it can be written either K for organic layer/water layer or water layer/organic layer. The Ks I have seen USUALLY have been written as Korganic/aqueous. Ko/a = mass organic phase/mass aq phase. soil phase = organic phase = 100...
Friday, January 21, 2011 at 11:47pm by DrBob222

Pls check math
Can someone pls help me. ??
Monday, September 17, 2012 at 7:38pm by Marko

chemistry
1) the aqueous layer will contain sodium salt of benzoic acid (sodium benzoate) while quinine will be dissolved in the organic layer. a) new aqueous layer will still contain sodium benzoate, and the organic, quinine. the purpose of adding another 2M NaOH to the organic layer ...
Tuesday, March 31, 2009 at 7:34am by Debs

Chemistry
An organic compound that has the empirical formula CHO has a molecular mass of 145 amu. Its molecular formula is?
Thursday, March 14, 2013 at 3:53pm by Stefhanie help me pls

Organic Chemistry
Does anybody know of a website that explains organic nomenclature ? ...something along the lines "organic nomencluture for Dummies" would be great :-) I'm stuggling to underatand "Z-3-Bromo-6-methyloct-3-ene" let alone draw it ! Here is a site that might just be what you are ...
Monday, March 12, 2007 at 2:22pm by WeatherGirl

Chemistry
Why was the term "organic" originally chosen? Give an example of an original organic substance. My answer: The term organic was originally chosen because early chemists believed that certain chemicals were only found in living organisms. These chemicals were called organic ...
Saturday, October 2, 2010 at 6:37pm by Anonymous

Ms. Sue pls check answers
pls check my answers
Wednesday, January 30, 2013 at 5:40pm by Jman

organic chemistry
Why is that absolute ethanol be used in preparing an ester with ethanol as one of the reactants? My Guess: It will cause hydrolysis of the ester as it is formed in the reaction vessel. Is this reasoning right? Pls. I need help about this...
Saturday, March 1, 2008 at 12:49pm by PIN

chemistry 101
pls can anybody check my answers
Saturday, December 8, 2012 at 12:34am by tracy

chemistry (Pls Bob check for me)
That looks ok to me.
Saturday, March 16, 2013 at 3:14pm by DrBob222

science
pls. pls. pls. somebody help me...you see im on a science class and i don't want to go to the regular section, so pls.... give me an acrostic for the word "SCIENCE"
Wednesday, June 11, 2008 at 6:59am by chris

Organic chemistry
School subject is "organic chemistry" -- assistance needed.
Saturday, November 8, 2008 at 3:38pm by Writeacher

organic chemistry
School subject is "organic chemistry" -- assistance needed.
Saturday, November 8, 2008 at 3:43pm by Writeacher

social studies---check 1 question pls
6. Whose mill launched the factory system? (1 point) James Monroe Eli Whitney ***Samuel Slater*** Francis Cabot Lowell help pls
Wednesday, January 29, 2014 at 12:19pm by TTR+S<3

BIOCHEMISTRY
From your other posts, I see that you may not have taken organic chemistry yet. Most universities require that you take and pass organic chemistry before you can take biochemistry. If UCI allows you to take biochemistry before taken and passing organic chemistry is beyond ...
Friday, January 25, 2013 at 9:18pm by Devron

Chemistry
Name the straight-chain alkane that is a constitutional isomer of 2,4-dimethylhexane. ????? pls can someone help me with this pls
Tuesday, November 19, 2013 at 9:03am by Menes

organic chemistry
Could it be to minimize hydrolysis? Check it out.
Friday, February 29, 2008 at 8:21pm by DrBob222

CHEMISTRY
Help me pls
Thursday, March 21, 2013 at 5:44pm by Lance Pls explain to me this Problem

organic Chemistry
In my Organic chemistry lab, the calculated enantiomeric excess was over 100% . Is this possible? and If not, what sort of error could have been made? *the observed optical rotation was read correctly
Monday, November 23, 2009 at 12:42am by jenny

geography
hi,i have make a project on hurricane Katrina on disaster management pls help to get information pls pls help me............
Thursday, June 17, 2010 at 12:15pm by varsha

Chemistry
KMnO4 is potassium permanganate and inorganic. CH3OH is methyl alcohol and is organic. C6H6 could stand for benzene and is organic. PdC12--I don't know this one. I wonder if you intended to type PdCl2 as in palladium chloride. That is inorganic. If it is really Pd with with 12...
Saturday, February 14, 2009 at 4:24pm by DrBob222

Math
If you pass general chemistry, then you can take organic chemistry. You pass general chemistry. You can take organic chemistry. Let P = you pass general chemistry Let Q = you can take organic chemistry I came up with P - >Q P therefore Q But my set up is wrong, how do I ...
Friday, January 21, 2011 at 3:56pm by Madison

Organic Chemistry
why wash the organic layer with distilled water?
Wednesday, November 17, 2010 at 2:15pm by Lisa

Chemistry
rank the following atoms and ions in the order of expected increasing radius: Ca, Ca2+, Ar Pls pls help me kindly... Anyone?
Sunday, November 18, 2012 at 9:05am by Anonymous

Organic Chemistry
2. Why doesnt the neutral organic compound (Flourene) dissolve in 1.5 M sodium hydroxide solution?
Tuesday, November 4, 2008 at 1:51pm by Dora

Organic Chemistry
the lower (organic) layer contains the benzoin. slightly soluble in water
Wednesday, November 17, 2010 at 2:15pm by Davia

gegraphy
am check spelling the words from the question. the one that says porcess is process the one that says hoe is how. pls i need the answer pls. thanks
Saturday, June 12, 2010 at 10:59pm by Ted

chemistry-organic
what happens when sodium benzoate is added to dichloromethane? what is the organic and aqueous layer of this product?
Wednesday, April 1, 2009 at 10:15am by Nancy

organic chemistry
Write equations showing how caffeine could be extracted from an organic solvent and subsequently isolated
Tuesday, April 16, 2013 at 10:16am by Kelli

Organic Chemistry
Explain why methanol and acetone are not suitable solvents for extracting organic compounds from aqueous solutions.
Thursday, January 21, 2010 at 12:41am by Casey

organic chem
organic chemistry lab and why is water the first choice for recrystallization when all factors are equal?
Monday, October 11, 2010 at 12:06am by sharon

maths permutation and combination - answer pls check
Pls check if my answer is correct 26C3*10C4 =26!/(26-3)!3! . 10!/(10-4)!4! = 26*25*24*23!/23!*6 . 10*9*8*7*6!/6!*4*3*2*1 =15600/6 * 5040/24 =2600*210 =546000
Sunday, April 13, 2008 at 8:45pm by matt

organic chemistry
Are you making triphenylmethanol using a Grignard reagent or something different. I'm not an organic chemist; however, the two ways of increasing yields in the general field of chemistry is to a. increase the concn of the reactants. b. remove (distill or otherwise) the ...
Monday, March 8, 2010 at 4:17pm by DrBob222

9th grade science
Carbs are organic. Lipids are organic. Proteins are organic.
Thursday, January 8, 2009 at 5:37pm by DrBob222

Finance
Omega Instruments has budgeted $300,000 per year to pay for certain ce- ramic parts over the next 5 years. If the company expects the cost of the parts to increase uniformly according to an arith- metic gradient of $1 0,000 per year, what is it expecting the cost to be in year...
Sunday, May 26, 2013 at 3:45am by Aly

Math
Can u pls pls pls solve this algebraic expression?? I cant solve it although I tried many possible ways and solutions :/ 10+1/3[4k-(18+7k)]
Sunday, July 31, 2011 at 11:48am by Sally

Chemistry
Name two organic compounds that cannot be extracted effectively from an aqueous solution by means of an immiscible organic solvent such as diethyl ether or cyclohexane
Sunday, January 22, 2012 at 2:52pm by Leesa

organic chemistry
Explain why Grignard reagent cannot be prepared from an organic halide that contains a hydroxyl (-OH), a carboxyl (-COOH), a thiol (-SH), or an amino (-NH2 or -NH) group.
Sunday, March 8, 2009 at 5:00pm by Anonymous

ss --- pls check my work!!!
Patience, child! I disagree with your answers for 3 and 4. Check your book.
Monday, February 24, 2014 at 12:51pm by Ms. Sue

math
how would I check this on my own? I know you put numbers in the place of the letters but when I do that I come up with my moms answer. this is what i have when I check my work. p=-2 q=3 6*(-2)*3 =-36 but 3(-2)(-2*3)=36 could you tell me what i'm doing wrong when I check them pls
Friday, October 22, 2010 at 6:13pm by TiffanyJ

help me pls :(
ms sue pls help me explain to me how you do it pls
Thursday, November 15, 2012 at 10:44pm by :(

Please check my answers.
Check them pls
Thursday, January 24, 2013 at 4:26pm by Jman

chemistry
Naming an organic compound or writing its name is not something you learn in one easy lesson. There are so many groups and so many rules. You need a course in organic chemistry just to get started. AP Chemistry and General Chemistry in college cover this very lightly. Here are...
Saturday, August 9, 2008 at 4:40pm by GK

Organic Chemistry 1
Why does iodine absorb organic molecules? This question is referring to the effect of the iodine chamber used in TLC.
Friday, October 24, 2008 at 6:40pm by Audrey

Chemistry
Amines (organic bases) react with HCl to form ammonium salts. Organic salts dissolve in water.
Wednesday, February 4, 2009 at 12:03am by GK

Chemistry
an organic compound is any compound with carbon atoms in it! so hexane and glucose are both organic compounds.
Monday, August 9, 2010 at 5:41pm by Anonymous

Organic chemistry
CH3CH2CH2CH2OH + NaBr --> CH3CH2CH2CH2Br + NaOH. NaOH would react with H2SO4 to form Na2SO4 which may precipitate in a mixture of organic solvents.
Saturday, March 20, 2010 at 4:16pm by GK

Chemistry
1. If you became confused and did not know whether a flask contains an aqueous layer or an organic layer, how would you find out which it is? 2. Write a balanced reaction for the reaction of Aspirin is precipitated from the basic aqueous solution by the addition of HCl. 3. ...
Monday, September 17, 2012 at 12:29am by Cassie

math
how would I check this on my own? I know you put numbers in the place of the letters but when I do that I come up with my moms answer. this is what i have when I check my work. p=-2 q=3 6*(-2)*3 =-36 but 3(-2)(-2*3)=36 could you tell me what i'm doing wrong when I check them ...
Friday, October 22, 2010 at 6:44pm by TiffanyJ

organic chemistry
Ko/a = (organic)/(aqueous) o = organic a = aqueous 5/100 = aqueous phase to start. Let x = g in organic phase in 25 mL ether; then (x/25) = concn in organic phase and (5-x)/100 = the amount left in the water phase. 4.0 = (x/25)/(5-x)/100 x will give you the amount in the ...
Thursday, February 24, 2011 at 11:31am by DrBob222

chemistry
in the isolation of eugenol, why is it necessary to extract the organic layer with enough base? I am not an organic chemist so check me on this. Isn't eugenol a phenol? Won't that make it somewhat acid? Won't the NaOH extraction make the phenol a sodium salt soluble in the ...
Monday, January 15, 2007 at 5:12am by madel

organic chemistry
a careless organic chemistry student was performing "competing nucleophiles in nucleophilic substitution reactions" experiment , and left his container of tert-butyl chloride and tert-butyl bromide open to the air for several hours. what happened to the composition of the ...
Monday, October 22, 2012 at 10:00pm by lyly

Physics
A child pulls a wagon along level ground. The handle with which she pulls the wagon makes an angle of 20.0 degrees with the ground as the child pulls with a force of 78.0 Newton. What are the components of the force. Pls pls pls pls help me answer this and may God bless u!
Wednesday, October 16, 2013 at 11:49am by Stephanie

Organic Chemistry/Biology
My text has a review of some chemistry before getting into the biology bit. I have come to a question "what are 3 characteristics/features of an organic compound." My book seems to only have the general they all have carbon. The rest goes into depth about the different classes...
Thursday, September 20, 2007 at 10:31pm by Lena

Chemistry
You won't be when summer gets here for you will find I am NOT an organic chemist. I can help with VERY VERY basic organic but after the first two/three questions I run out of steam.
Sunday, May 13, 2012 at 6:39pm by DrBob222

organic chemistry
Dilute by a factor of 10. Rotation will be +14 if it is 140 or -22 if it is -220. The direction you turn the polarimeter control will tell you which. Check my thinking.
Saturday, November 15, 2008 at 11:23pm by DrBob222

organic chemistry
First, this doesn't look like an organic chem question to me. I don't know any organic chemistry but this one I can work. moles NaOH = Molarity NaOH x liters NaOH = ? Convert moles NaOH to moles H2SO4 this way. ?mols NaOH x (1 mole H2SO4/2 moles NaOH = ?moles NaOH x 1/2 = x ...
Tuesday, January 31, 2012 at 10:01pm by DrBob222

Chemistry
In an organic chemistry lab, why is the organic layer usually the upper layer in the separatory funnel while the aqueous layer is usually the bottom layer?
Wednesday, November 16, 2011 at 11:14am by Rachel

chemistry
In the extraction of an organic compound from a dilute aqueous solution, will the organic solvent form the uppoer or lower layer when each of the following solvent is used? a. chloroform b. cyclohexane c. heptane d. dichloromethane
Tuesday, September 23, 2008 at 5:25pm by Poole

organic chemistry
gas chromatographic analysis of a mixture of organic compounds gave the following peak areas: 2-hexene= 2.5 2-bromogexane=4.0 2-henanol=1.8, calculate the mole percent compostion of the mixture
Wednesday, March 14, 2012 at 12:30pm by jessica

Soxhlet extractor
Does anyone know what kindo of chemistry lab course(Organic, Physical, etc.) might use a soxhlet extractor in the experiments? Sheryl http://en.wikipedia.org/wiki/Soxhlet_extractor Certainly Organic It is used in organic chemistry. The URL provided by Lance will give the ...
Monday, October 9, 2006 at 5:30pm by Sheryl

chemistry
Which solvent would dissolve each of the following compounds?(water, a polar organic solvent, or a nonpolar organic solvent) a) NaI b) H3CCH2CH2OH C)H3CCH2CH2CH2CH2CH2CH2CH3
Sunday, September 11, 2011 at 9:39pm by lon

chemistry
How do you make a venn diagram of the 6 branches of chemistry? (Inorganic chemistry, organic chemistry, biochemistry, nuclear chemistry, physical chemistry, and analytical chemistry) like where would they go in the 3 circles
Sunday, August 26, 2012 at 10:10pm by jake

Organic Chemistry
To which class of compounds might the following molecule belong? C3H6O I am guessing, but is it ketone class? Can someone check for me.
Wednesday, August 5, 2009 at 11:21pm by Soojung

Chemistry
Hey; I am doing a lab write up that has to do with NMR spectroscopy. Part of it asks to determine how many nonequivalent protons are in the compound 2-chloro-6-methylaniline, among other things. My problem is this is for kinetics class but this part of it has to do with ...
Tuesday, February 26, 2008 at 9:32am by Tracy

help biology honors please
The boundary between organic and inorganic compounds are somewhat...arbitrary. Historically, a compound that can be produced only by a life-form is considered organic, and technically all things organic contain carbon. However, all compounds carbon are not neccesarily organic...
Tuesday, November 4, 2008 at 9:40pm by Victor

organic
Aren't these Grignard reactions? http://www.organic-chemistry.org/namedreactions/grignard-reaction.shtm
Thursday, November 20, 2008 at 10:45am by DrBob222

organic chemistry
Show the reaction of 1-naphthylamine hydrochloride with sodium hydroxide using structural formulas. Indicate which layer (aqueous or organic) each component in the reaction will mainly reside in (for both products and reactants). How is this done?
Thursday, February 5, 2009 at 11:39pm by sarah

Chemistry
Ca(OH)2 has a Ksp of 6.5 x 10^-6. If 0.37 g of Ca(OH)2 is added to 500 mL of water and the mixture is allowed to come to equilibrium, will the solution be saturated? pls help me I stayed up all last night trying to get this one question :(
Sunday, November 18, 2012 at 9:10pm by Kevin pls it's due at midnight :(

organic chemistry
This is hardly organic chemistry. (HNO3) = 1.25E-3M. Since HNO3 is a strong acid (100% ionized), that means (HNO3) = (H^+); therefore, (H^+) = 1.25E-3 and pH = -log(H^+) = -log(1.25E-3) = ?? The answer is approximately 3
Monday, May 2, 2011 at 2:07pm by DrBob222

organic chemistry
Why does the alkyl halide layer switch from the top layer to the bottom layer at the point where water is used to extract the organic layer?
Monday, October 24, 2011 at 11:46am by Ivy

Organic Chemistry
The separation of a mixture of benzoic acid and benzoin in dichloromethane into its pure compounds by a combination of solvent extraction , distillation and recrystallization. Why is carbon dioxide evolved when the organic solution is shaken with sodium bicarbonate? what is ...
Wednesday, November 17, 2010 at 2:15pm by Davia

CHEMISTRY> HELP QUICK! pls
I GOT THIS WRONG IN AN ASSIGNMENT. I HAVE AN EXAM IN 2 DAYS. CAN YOU SHOW ME HOW TO DO IT PLS. What is the pH of a 2.62 x 10 -1 M NaNO2 solution ? NB the pKa for HNO2 = 3.153. 12.13 13.42 1.87 8.29 0.58
Friday, June 4, 2010 at 9:32pm by Lucinda

chemistry
1)when benzoic acid and quinine is dissolved in CH2Cl2 and added 2M NaOH, what is the organic layer and what is the aqueous layer? a)and by adding another 2M NaoH to the organic layer, what is the new aqueous layer and organic layer? b)from (1), if we add CH2Cl2 to the aqueous...
Tuesday, March 31, 2009 at 7:34am by Nancy

maths permutation & combination - answer pls check
Your password for a given website is made up of three letters followed by four numbers. Find the number of possible passwords if there are no restrictions on what three letters and what four numbers can be used. Pls check if my answer is correct 26C3*10C4 =26!/(26-3)!3! . 10...
Sunday, April 13, 2008 at 9:35pm by matt

chemistry
I wonder if you meant to write dibenzalacetone? Add an organic solvent and NaHCO3 solution. Extract. The sodium salt of benzoic acid comes out in the water layer; the neutral compound stays in the organic layer.
Monday, October 1, 2012 at 12:38pm by DrBob222

Chemistry- DrBob222 Urgent Please help
I'm not an organic chemist; therefore, I'm not up to recent IUPAC standards so you should confirm whatever I write about organic. I would name these as follows: 1,4-butadiene 1-pentyne-3-ene 2-bromo-3-chlorohexane
Tuesday, November 26, 2013 at 10:42pm by DrBob222

Chemistry
I think you are close. You will find that the distinction between organic and inorganic is often somewhat nebulous. Yes, in general, organic compounds contain carbon and inorganic do not...but not always!! for example, carbon dioxide, sodium cyanide, and sodium bicarbonate are...
Saturday, February 9, 2008 at 4:05pm by DanH

Chemistry
No. It is true that hexane is an organic molecule; however, glucose is an organic molecule, also. other choices included; glucose has fewer hydrogens than hexane. Glucose is C6H12O6; hexane is C6H12 so it can't be this one. hexane is an organic solvent and glucose is not an ...
Monday, August 9, 2010 at 5:41pm by DrBob222

Chemistry
Ko/aq = (concn org layer)/(concn aq layer) o is organic layer. aq is aqueous layer. I can't tell from your post if that is 0.13 g in 1.6 mL organic layer or if that is a period after benzoic acid. You need the concn in EACH layer and you list g only in the organic layer and ...
Monday, September 26, 2011 at 12:20pm by DrBob222

MANIPULATION OF DNA
can anyone describe to me what this is pls? also can anyone pls explain how dna manipulation works and what it does pls?
Wednesday, April 1, 2009 at 9:42am by GLORIA

Physics - Assist pls!
Dear All please do help me out - thanks. How much heat and light energy is produced by a 100W electric lamp in 5 minutes? Solutn = I tried this using Energy = power x time 100 x 5min = 100 x 300 sec = 30,000J - Pls do I got the answer? You will see it easier if you include ...
Wednesday, April 18, 2007 at 12:58pm by Sola

chemistry
A closed vessel with volume of 226.9mL initially contained air at 680.8mmHg at 16.5 degrees celcius. A sample of an organic liquid of mass 0.113g was injected into the flask which was then warmed to 124.9 degrees celcus causing all the organic liquid to vaporise. The final ...
Wednesday, March 31, 2010 at 3:58am by T

Chemistry
To neutralize a 0.5192 g organic acid, 44.0 mL NaOH solution (1.00 ml ~ 1.12 mL HCl ~ 0.0100 g CaCO3) is required. What is the equivalent weight of the organic acid?
Tuesday, January 21, 2014 at 4:17am by Summer

Chemistry
P.S. I have heard that you are either a Gen Chemist or an Organic Chemist. (I am hoping to heck I am an organic chemist! But, I did well in Gen Chem, thanks in part to you.)
Sunday, May 13, 2012 at 6:39pm by Miaow

chemistry pls help
If 10.0 mL of 1.0M HCl is added to 90 mL water, what is he concentration of the new solution? What is the pH of this solution? If the solution is titrated by 0.500M Ca(OH)2, how much volume (ml) of NaOH necessary? Need help pls.
Saturday, December 8, 2012 at 12:37am by Emmy

chem
need the check pls
Monday, July 7, 2008 at 2:10am by UN

Algebra pls check
Yes.
Sunday, October 14, 2012 at 12:08pm by Ms. Sue

ss pls check answers
Oh ok thanks!
Wednesday, January 30, 2013 at 5:40pm by Jman

college
Organic chemistry question. I need help with a couple of questions on organic groups. What are some products that contain: Alkynes, Aromatic (benzene), Ethers, Aldehydes, Ketones, and Acids. I also need to know some of the harmfull effects that each one of them can cause.
Sunday, October 24, 2010 at 5:12pm by Tom

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