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Org. Chem

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Org. Chem.
A natural product (MW=150) distills with steam at a boiling temperature of 99 degrees Celsius at atmospheric pressure. The vapor pressure of water at 99 degrees Celsius is 733 mm Hg. A) Calculate the weight of the natural product that codistills with each gram of water at 99 ...

chem org
dipole-dipole means? and diff between non polar and polar? is it really part of organic chem?

org chem
How to know if there's a dipole moment???

org chem
Why does Oxygen8 has 2 lone pairs? Please help

org chem
is precipitation technically the same as crystallization?

org chem
is precipitation technically the same as crystallization?

chem
What is the arrangement of particles for a liquid? A gas? Thanks in advance. http://en.wikipedia.org/wiki/Phase_(matter)

Biochem
The number _____ and _____ sign are assigned to the first nucleotide of a transcriptional unit. a. 0, positive b. 1, negative c. 1, positive d. 0, no sign No idea what the answer might be. Since this is not my area of expertise, I searched Google under the key words ""first ...

org. chem.
biphenyl and hexane would not hydrogen bond because they are both nonpolar right?

org. chem
Give IUPAC name of the products of the dehydration of this alcohol? 2-ethyl cylcopentanol

org chem
Can someone tell me.how to know the more higher rate of inductive effect? Im confused

org. chem.
Name some advantages of using acetaminophen (tylenol) instead of aspirin as an analgesic.

org. chem
Can someone explain in simple terms the difference between hemiketal and hemiacetal? Just curious

org chem
2 ethylpentane My answer for this is a correct name and structure but my teacher said it is incorrect.. Why? Please explain.

org chem
Law of partition means? I think it is distribution? How is this applied in extraction involvong immiscible solvent? Help please.

social studies
what are the type of rocks used to build the agra fort , gate way of india,lotus temple , qutub minar , india gate and jama masjid Read each one carefully: http://en.wikipedia.org/wiki/Agra_Fort http://en.wikipedia.org/wiki/Gateway_of_India http://en.wikipedia.org/wiki/...

Org. Chem.
If you were relying on IR data alone,could you determine if you had the (+) or (-) form of carvone? why or why not? suggest one other method for detection.

org. chem
what would the oxidation product 1. 2-methylpentnal 2. 3-pentanone My answers: 1. 2-methylpentanoic acid 2. no further reaction I just want to be sure I'm doing this right. Thanks.

More Organic Chem.
1. Would you expect ibuprofen to be soluble or insoluble in 1.0 M NaOH? Explain. 2. Thymol is very slightly soluble in water and very soluble in 1.0 M NaOH. Explain. Any info. would help! Below are two web pages. The first shows ibuprofen has a -COOH group which makes it an ...

Org. Chem.
are 1-octanol and 1-butanol polar or nonpolar? I think slightly polar?

Org.chem. I
why is the toxicity of (+)-carvone in rats is about 400 times greater than that of(-)-carvone?

BIOLOGY
As cells get older, DNA gets damaged and lowers in DNA repair process what is the initial effect? Since this is not my area of expertise, I searched Google under the key words "DNA aging" to get these possible sources: http://www.chem-tox.com/DNA/aging.htm http://www.benbest....

Org Chem
Which of the following compounds could be meso compounds? a. 2-bromo-4-chloropentane b. 2,5-dimethylheptane c. 2,4-dimethylpentane d. 4,6-dichlorononane

Org. Chem.
Synthesize 6-(4-tert-butylphenyl)cyclohex-3-enecarbonitrile using (Z)-3-phenylacrylonitrile as your starting material and any other reagents you wish. Please help and an explanation would be greatly appreciated.

SoCiAl(again)
Which Enlightenment writer expressed the idea that the relationship between government and the people it governs is a social contract? a- Cincinnatus b- John Locke c- Cicero d- Baron de Montesquieu could it be d? I've never even heard of Cincinnatus......... http://en....

org chem
Using reagents no more than four carbons long, propose a synthesis of (1R,2S,4R,5S)-1,2,4,5-tetramethylcyclohexane and (1S,2R, 4R, 5S)-1,2,4,5-tetramethylcyclohexane. Would like a way to start this...

Biology
Where RNA is present? in cytoplasm or nucleus or both of them. Thank you for using the Jiskha Homework Help Forum. I'd begin with the information found on Wikipedia: http://en.wikipedia.org/wiki/RNA (the basics) http://en.wikipedia.org/wiki/RNA_interference (interference) http...

Org. Chem.
Is malonic acid polar or nonpolar? and does it hydrogen bond with water? with methyl alcohol? with hexane? I keep getting different results and would like some help please with explanation.

History
What factors motivated King Leopold of Belgium to seek ownership of the Congo region? http://en.wikipedia.org/wiki/L%C3%A9opold_II_of_Belgium Thank you for using the Jiskha Homework Help Forum. Hopefully you have a good history of the Congo. I'm sure we've provided sites ...

science
what is the relation between a solide and a liquid Well ice can turn into water. Try reading: http://en.wikipedia.org/wiki/State_of_matter http://en.wikipedia.org/wiki/Solids http://en.wikipedia.org/wiki/Liquids

help!
How are physical characteristics combined with behavioral characteristics by northern mammals to conserve heat during extreme periods? http://en.wikipedia.org/wiki/Hibernation http://en.wikipedia.org/wiki/Estivation In addition to the excellent information posted by Lance, you...

org chem
When a solute dissolved in a solvent A. Freezing pt incrases B. Boiling pt increases C. Vapor pressure increases D. Concentration of the solvent My answer is B.

geography/geology
i need a brief geological history of region where gabbro, schist and sandstone are formed and found These three rocks are examples of igneus, metamorphic, and sedimentary rocks. Check these sites for more information. http://en.wikipedia.org/wiki/Gabbro http://en.wikipedia.org...

anatomy
Is this correct for the cellular organelles: riboncoine. mitochondrion,Lysosome and chloroplasts/ the organic compound are amino acid, nulear acid, lipids.operon. http://en.wikipedia.org/wiki/Organelles http://en.wikipedia.org/wiki/Organic_compounds http://en.wikipedia.org/...

Biology
how does the structure of green cell organelles relate to the metabolic process of photosynthesis and aerocic respiration many thanks http://en.wikipedia.org/wiki/Chloroplast http://en.wikipedia.org/wiki/Light-dependent_reaction http://en.wikipedia.org/wiki/Calvin_cycle

Org. Chem.
why don't water and benzophenone hydrogen bond? benzophenone has a C=O and water forms H bonds too.

GOVERNMENT HELP
The form of law enacted both by the people, through referendum or initiative, and by legislative bodies is called: constitutinal law, statutory law, common law read each and decide http://en.wikipedia.org/wiki/Non-statutory_law http://en.wikipedia.org/wiki/Statutory_Law http...

biology
is anyone able to help i have to write 700 words on the subject of the metabolism of green plant cells in relation to energy exchange processes any guidance would be very much appreciated http://en.wikipedia.org/wiki/Photosynthesis http://en.wikipedia.org/wiki/Calvin-...

fischer esterification
which alcohol and carboxylic acid would produce benzyl isobutyrate by Fischer esterification? and which alcohol and carboxylic acid would produce isobutyl benzoate by fischer esterification? Since this is not my area of expertise, I searched Google under the key words "Fischer...

IB/AP
Is IB, applicable for American citizens in high school? Thank you for using the Jiskha Homework Help Forum. Here are some sites to give you a better background on the IB Program: Here are some sites to give you more background on the IB Program: 1. http://www.ibo.org/ 2. http...

org. chem
The question asks, "draw the hemiacetal obtained by addition of ethanol 2-methylpentanal" My question is how to do this problem? I know you can't actually draw it out on this site. However so I know how to do it on the upcoming test. Thanks :)

Science
Where can I find a biography on William Harvey? http://www.accessexcellence.org/RC/AB/BC/William_Harvey.html http://www.accessexcellence.org/RC/AB/BC/William_Harvey.html The other two posts don't seem to work right. Try this one. http://en.wikipedia.org/wiki/William_Harvey

english
Can somone please give me an example of slapstick or a website? Thank you for using the Jiskha Homework Help Forum. First of all, a definition: 1. http://en.wikipedia.org/wiki/Slapstick Now slapstick comedy in the 1920's: 2. http://slapstick.lbox.org/

Org. Chem.
When sucrose is fermented to produce ethanol why is it not possible to obtain a final solution containing more than 10-15% ethanol? Does this have to do with azeotropes? However, I thought this was possible? I am confused, please help.

org. chem.
When sucrose is fermented to produce ethanol why is it not possible to obtain a final solution containing more than 10-15% ethanol? Does this have to do with azeotropes? However, I thought this was possible? I am confused, please help.

American History
Briefly Explain THE ARGUMENTS OF aLFRED t MANHAN , HENRY CABOT LODGE AND ALBERT J BEVERIDGE REGARDING EXSPANSIONISM If you post your answer, we'll be glad to critique it for you. I do not know the answer i looked in the textbook but i cant find the answer I didn't find ...

Science
What is wood buffalo's position in the food chain? Also, how do they contribute to the environment? http://en.wikipedia.org/wiki/Wood_Bison Top prey item for wloves and grizzly. Especially the young and weak. give an example of a skeletal muscle does http://en.wikipedia.org/...

Org. Chem.
Provide methods for preparing the following compounds by the Grignard method: A) 3-pentanol B) Hexanoic acid There are also 2 more, but I don't even know how to name them. C) CH3CH2CCH3OHCH2CH3 D) A cycloalkene (3 double bonds-alternated) with CHOHCH2CH3 attached to it Please ...

Org. Chem.
If n-butyl alcohol, sodium bromide, water, and concentrated sulfuric acid (cooled in ice bath while adding H2SO4) are placed in a flask and refluxed, what are the formulas of the salts that precipitate when the reaction mixture is cooled?

Org Chem. I
Using the Cahn-Ingold-Prelog sequence rules,assign priorities to the groups around the chiral carbon in carvone. Draw the structural formulas for (+)- & (-)-carvone with the molecules oriented in the correct position to show the R & S configurations.

Spanish/History, more for Laura & Carry
Here is additional information on Citzendium that I hope will help you: 1. http://en.citizendium.org/wiki/Latin_America 2. http://www.vacilando.org/index.php?x=810 3. (criticism of racial mixing; I couldn't get there but I hope you can:) www.enotes.com/nineteenth-century-...

social studies
the theory that government should not intefere in economic affairs is known as? A) popilism B) supply-side economics C) laissez-faire D) capitalism Here's what Populism is (assume that's what you meant): http://en.wikipedia.org/wiki/Populism Here's what supply-side economics ...

org chem
Tca has greater acidity than acetic acid. Bcos of EAIE of 3 cl increases the positivity of carbonyl C making release of proton easier. Please explain. Why Cl increases positivity when Cl is infact an electronegative element

Environmental Science
List at least two benefits and two drawbacks of each form of perst control for: Pesticides, Genetic engineering, Biological control, insect birth control through sterilization, Insect sex attractants (pheromones) Insect harmones, Food irradiation, and Intergrated Pest ...

Science
What is a polyatomic ion? A polyatomic ion is an ion composed of more than one kind of atom. For example, the hydrogen carbonate ion, HCO3^- (also called bicarbonate), ammonium ion (NH4^+), oxalate ion (C2O4^-2), phosphate ion (PO4^-3), sulfate ion (SO4^-2), sulfite (SO3^-2), ...

Earth Science
How are distances in space measured? What is the nearest star to Earth beyond the sun and how far away is it???? http://en.wikipedia.org/wiki/Light_year http://en.wikipedia.org/wiki/Alpha_Centuri why does Jupiter spin so fast while it's do big

dogs
A website on a Basenji Here are three good websites about basenjis. http://www.akc.org/breeds/basenji/index.cfm http://www.basenji.org/ http://en.wikipedia.org/wiki/Basenji

org chem
Write the cis and trans isomers of 1.) 2-pentene 2.) 3-hexene Please help me idk how. I just know that cis.. Are where atoms are on the same side. While trans on the opposite side

Science
im stuck in some questions in my homework.. thnx in for ur help in advance! 1)What is the process where elements heavier than helium are formed? 2)What type of features are found at subduction zone(convergent boundaries)? ders 4 answers for it.. i already got mountains and ...

Comp.
Could anyone help me Please.. about the uses of the computer on the following fields. 1.Business 2.Arts and Films 3.Music 4.Engineering 5.Manufacturing 6.Police and Laws Enforces 7.Medicine 8.Education 9.Science and Research 10.Archeology Thanks :-) http://en.wikipedia.org/...

social studies
Could someone please tell me what the starvation embargo and UN inspections in Iraq are about? Thanks! http://en.wikipedia.org/wiki/Iraq_and_weapons_of_mass_destruction http://www.commondreams.org/headlines/081900-02.htm http://www.unesco.org/courier/2000_07/uk/ethique.htm

Kris - History
Here are two really good sites. http://www.ushistory.org/Declaration/ http://en.wikipedia.org/wiki/United_States_Declaration_of_Independence

org. chem
Draw the acetal obtanined from 1-propanol and benzaldehyde Draw the ketal obtained from 2-propanol and 3-methylcyclpentanone Can someone tell me where the actal/ketal comes from or do I just add it to the equation. Not sure how to start this. Thanks :)

7th grade science help
why is the process that takes place in mitochondria often describe as being the opposite of the process that takes place in a chloroplast? Chloroplasts produce ATP. Mitochondria consune ATP in the production of protines. The mitochondria are NOT the site of protein synthesis. ...

Physical Science
If an egg falls into apple sauce or water, is it an inelastic collision? http://en.wikipedia.org/wiki/Inelastic_collision and http://en.wikipedia.org/wiki/Elastic_collision Then decide. Hint: yes Another hint: Did the egg bounce back up to its original height, conserving ...

History
Describe a major result of the Civil War on the US. Was the result good or bad for the country? http://en.wikipedia.org/wiki/American_Civil_War#Analysis_of_the_outcome from http://en.wikipedia.org/wiki/American_Civil_War Lots of results to choose from. Be sure to check on the ...

SCIENCE
What is the uses a ribosome? wouldn't it be to feed the copy of DNA and to make proteins out of amino acids. What is an amino acid made of and what is it's uses? wouldn't that one be it is made of three bases and it is used to make proteins. sorry the first question is unclear...

University of Botswana
Define Ethics and show how it relates to Metaphysics and Epistemology. Check these sites. http://en.wikipedia.org/wiki/Ethics http://en.wikipedia.org/wiki/Epistemology http://en.wikipedia.org/wiki/Metaphysics Why are we here on Earth? What is our Purpose? How do we relate to ...

Org. Chem.
We did an experiment on the synthesis of n-butyl bromide using n-butyl alcohol and H2SO4. 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? Please Help.

Safety
Who is the father of occupational medicine in the U.S? Do other countries have individuals who played a significant role in starting safety prgrams in their countries? NEED REFERENCES Thanks! Thank you for using the Jiskha Homework Help Forum. Happily I learned there IS an ...

mythology?
i have a final and i don't know the difference between te cyclopes, giants and titans...can someone help http://en.wikipedia.org/wiki/Cyclops http://en.wikipedia.org/wiki/Giant_%28mythology%29 http://en.wikipedia.org/wiki/Titan_%28mythology%29 thanks Chanel, You can also use a...

Geography
What contributions has France made to the world's culture?(Essay) Cheese. Perfume. Do you just mean now or throughout the centuries? This site may give you some ideas. http://en.wikipedia.org/wiki/High_culture This UNESCO site has a long list of the cultural sites of France. ...

Isreali vs. Palestines
I have a power point presentation *due in the morning* on the conflicts between the Isrealites and the Palestinians. It is the religion side of the war, al it has to include are some fast facts and some of the reasons why the war is going on. It only has to be five slides. ...

To Nombuso
I removed your post because you included personal contact information. That is not a safe thing to do online. --------------- Ask your school counselor for help. What are your grades in those classes? If they're high, then you have more choices. What do you want to do? Try ...

History
Compare and contrast the views of Thomas Jefferson and Alexander Hamilton on the Constitution, National Bank, and Foreign Affairs. Anyone please i got to write an essay on this and cant find the information i need. PLEASE HELP ASAP Search for the word constitution here: http...

social studies
Who founded the city of Buffalo, New York? Check these sites. http://history.buffalonet.org/1801.html http://en.wikipedia.org/wiki/History_of_Buffalo,_New_York

Latin
In what section of which writing does Pliny the elder talks about unusual animals? I think the panda is one of the animals he talks about. Thank you for using the Jiskha Homework Help Forum. Here are some sites for you: 1. http://www.livius.org/pi-pm/pliny/pliny_e3.html 2. ...

org. chem.
Explain how caryophyllene fits the isoprene rule. I don't know how to explain this. I do know the isoprene rule is (C5H8)n, where n is the number of isoprene units. Please help.

chem
Ionization energy is defined as the minimum energy required to remove an electron from the ground state (n0) to infinity (n∞). Determine the wavelength of radiation required to ionize the hydrogen electron from the n = 2 energy level. Calculate the energy (Joules) ...

social studies
By when had Rome expanded include Hispania(Spain) http://en.wikipedia.org/wiki/Image:RomanEmpire_Phases.png from http://en.wikipedia.org/wiki/Roman_empire#Evolution_of_Imperial_Rome On that map, pay attention to the colors and the dates for each color. =)

org chem
describe the hybridization (sp3, sp2, sp) of the following bonds. BH3 (all single bonds) Is it sp2? H-C triple bond C-H Is it sp? A double bond with two methyls connected at each end Is it sp2? Please Help ASAP

Biology
1. In an experiment, a man drank a litre of water, his urine output increases so that after hours he had eliminated the extra water. When he drank a litre of 0.9% of sodium chloride (common salt), there was little or no increase in his urine production. Explain the difference ...

org chem
why do we use glycerol bath instead of water bath in melting pt determination? if glycerol were no available, what can we use instead? suggest 3 liquids. 1. paraffin oil? right?

socila studies^-^ ! help
name at lease 5 important event that took place in the history of texas.(NOTE: historical events are important things that happened in the past.do not put annual events here.) http://en.wikipedia.org/wiki/History_of_Texas a major confederate blunder which led to union victory ...

language arts
we are reading a book called the pearl and we have to answer a few questions andi need help wiht this one: what are the possibilities that a pearl could be the size of a seagulls egg? According to a Wikipedia article about pearls, the largest pearl ever found weighed 14 pounds...

science
Do aliens and ufo's exist? If they do, do they visiit earth? The word "alien" means foreigner or someone different. In that sense, there are many aliens. Are there intelligent beings on other planets? We don't know. We have no scientific evidence of life on other planets or ...

cultural diversity
Which is the cultural diversity (of other countries) in Mexico city? Check these sites. http://www.questconnect.org/mexico_cc_ethnic.htm http://en.wikipedia.org/wiki/Mexico#Demographics Thank you for using the Jiskha Homework Help Forum. Here is another site to visit: http://...

Geography
what is the name of the city that is the capital of Washington? I'm not sure if they mean Washington D.C or not? Thank you! http://en.wikipedia.org/wiki/Washington,_D.C. Or http://en.wikipedia.org/wiki/Washington and scroll down to the green table D.C. is a federal aerea and ...

us history, need help quick please!!
i need to make a t-table. i need to know the complaints of the anti-federalists about the congress, executive branch, judiciary branch, and the right of the people, and then the federalist responce to each of these complaints. Please check these sites. The first two are ...

math
Find the first and third quartiles, Q1 and Q3, of the following set of numbers.341, 240, 187, 373, 241, 455, 276, 210, 321 I searched Google under the key words "Quartiles" to get these possible sources: (Broken Link Removed) http://www.shodor.org/interactivate/discussions/...

Greek mythology
What are some interesting facts about Hera the greek goddess she wanted to trick Zeus and make him loose power http://www.pantheon.org/articles/h/hera.html http://en.wikipedia.org/wiki/Hera

Amber, Biology, DNA
Amber, Biology First of all, as Christina said, "Post a New Question" because when you post under someone else's post we assume it's an answer to that first question! Here are some sites for you on DNA: 1. (definition): http://en.wikipedia.org/wiki/DNA 2. (DNS from the ...

Social Studies
On this website, under Social Studies Homework Help, there is something listed as "Black Tuesday". In class, we are also studying about the 1930s and World War II, but we were talking about "Black THURSDAY"...partially confused... http://en.wikipedia.org/wiki/Black_Tuesday ...

pigments
What are the three accessory pigments in plants? http://en.wikipedia.org/wiki/Phycobilin http://en.wikipedia.org/wiki/Carotene http://en.wikipedia.org/wiki/Xanthophyll http://en.wikipedia.org/wiki/Phycoerythrobilin

Biology
How do you find out how many tRNA are in a sequence? How do you name a RNA? http://en.wikipedia.org/wiki/Transfer_RNA http://en.wikipedia.org/wiki/Translation_%28genetics%29

science
i need some facts about the pulmonary artery and the aorta http://en.wikipedia.org/wiki/Pulmonary_artery http://en.wikipedia.org/wiki/Aorta

history
Hi, I wanted to know if this is right or not. The purpose of the Espionage Act and Sedition Act during World War I was to protect government information. Also these were the only two laws which were passed during World War I. http://en.wikipedia.org/wiki/Espionage_Act_of_1917 ...

I a SWAA
What does the brain teaser I a SWAA mean? Thanks. http://www.swaainternational.org/ (Society for Women and AIDS in Africe) Sudanese Women Artists Association|Welcome (Sudanese Women Artists Association) Social Welfare Action Alliance http://www.socialwelfareactionalliance.org...

psychology
What is it the theory called when you tell your child that he can't go out an play until he eats his vegetables? .....very big grin..... Bribery! Maslow's Theory may be what you are looking for. See the site below. http://en.wikipedia.org/wiki/Maslow's_hierarchy_of_needs This ...

Government
I am a college student but I really need help with one of my classes. I was wondering if you could help. Thanks! How did the Voting Rights Act of 1965 and the Civil Rights Act affect other minority groups? These articles point out that the Civil Rights and Voting Acts prohibit...

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