1. 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

    asked by madel on January 15, 2007
  2. CHEM Help please Thanks

    8) Explain exactly how you would perform the following laboratory instructions: -a) “Wash the organic layer with 5.0 mL of 1 M aqueous sodium bicarbonate.” -b) “Extract the aqueous layer three times with 2 mL portions of methylene chloride.” 10)

    asked by Amy on December 5, 2013
  3. 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?

    asked by Ivy on October 24, 2011
  4. 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.

    asked by CMM on November 30, 2009
  5. 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

    asked by Nancy on March 31, 2009
  6. 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?

    asked by Rachel on November 16, 2011
  7. lab chem

    If toluene (density 0.87) wre used to extract ethylene bromohydrin (density 2.41) from an aqueous solution, a. Could you be certain that the organic solution would form the upper layer? b. by what test could you identify the nonaqueous layer.

    asked by Poole on September 23, 2008
  8. extraction

    How to distingush organic layer and aqueous layer? The organic layer is the one on top. Most organic solvents are less dense than water. (NOte: Non-hydrocarbons such as chloroform, methylene chloride, carbon tetrachloride etc are more dense than water.)

    asked by bb on August 21, 2007
  9. chemistry -drbob222

    I'm not sure if my 1 and 2 are correct, and I don't know how to do 3, 4, and 5. Any help is appreciated! 1) You wish to extract an organic compound from an aqueous phase into an organic layer. to minimizing the number of transfer steps, would it be better

    asked by Anonymous on October 9, 2009
  10. ap chemistry

    A 115 mg sample of eugenol, the compound responsible for the odor of cloves, was placed in an evacuated flask with a volume of 500 mL at 280C. After the eugenol completely evap- orated, the pressure that it exerted in the flask under those conditions was

    asked by cheri on February 9, 2013
  11. science (chem)

    What would the best way to determine the organic layer from the aqueous layer in a extraction procedure? ~would it be to add a few drops of water to each layer and see what happens? or is there a better way since this procedure of adding a few drops of

    asked by ~christina~ on September 9, 2007
  12. 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

    asked by Cassie on September 17, 2012
  13. Chem

    Calculate the percent yield of eugenol obtained considering the fact that clove oil is approximately 16-19 % clove by weight of cloves. isolated eugenol=061g purity of eugenol in clove oil=99.6% (based on clove oil gas chromatograph) Estimate the % yeild

    asked by Jason on November 28, 2010
  14. Organic Chemistry

    Why is methylene chloride (dichloromethane) used to extract eugenol from cloves, and not toluene?

    asked by Sasha on October 19, 2015
  15. Org. Chem.

    what is the precipitate formed when HCl is added? I believe the answer is NaCl, but I am not sure and this precipitate only formed in the first NaOH extract, as precipitate was essentially nonexistent in the 2nd extract? Below is what was done in the

    asked by CM on September 21, 2009
  16. Chemistry

    During an experiment involving separation, you forget to label your beakers and you are unsure of which beaker contains the aqueous layer and which contains the organic layer. How could you quickly and efficiently determine which one is the aqueous layer?

    asked by Rachel on October 19, 2011
  17. Organic

    Which layer is likely to be on the bottom in each case? a. Sodium chloride layer or a layer containing a high-density organic compound dissolved in methylene chloride (d  1.4 g/mL) b. Sodium chloride layer or a layer containing a low-density organic

    asked by chemNerd on September 29, 2014
  18. Organic chem

    i have no idea how to do this! please help me :) 1a. When sodium benzyloxide is reacted with excess acetic anhydride it produces benzyl acetate and byproducts. What are those byproducts? If extracting with dichloromethane, what could be added to the

    asked by Tasneem on August 7, 2012
  19. Organic Chemistry

    1a. When sodium benzyloxide is reacted with excess acetic anhydride it produces benzyl acetate and byproducts. What are those byproducts? If extracting with dichloromethane, what could be added to the aqueous layer to sequester the byproducts? Which layer

    asked by Tasneem on August 6, 2012
  20. Extraction equations

    Extraction procedure and equations: Thought I'd better post this on the current page. I need the reaction equations checked. I tried to put them in bold but can't. They should all be after Reaction: Solid benzoic acid, p-nitroaniline and napthalene ->

    asked by Sheryl on October 8, 2006
  21. Organich Lab Help Please!!!!!!!!

    a) You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml. Is the aqueous layer the lower or the upper layer. How could you easily test this. ----- Ethylchloride is less dense so it is

    asked by Anonymous on September 15, 2014
  22. Chemistry Urgent Help and Check Please!

    a) You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml. Is the aqueous layer the lower or the upper layer. How could you easily test this. ----- Ethylchloride is less dense so it is

    asked by Anonymous on September 14, 2014
  23. Organic Chem Help

    You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml. Is the aqueous layer the lower or the upper layer. How could you easily test this. ----- Ethylchloride is less dense so it is the

    asked by Anonymous on September 14, 2014
  24. Chemistry Urgent Help Please!

    You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml. Is the aqueous layer the lower or the upper layer. How could you easily test this. You dissolve sodium chloride 40g. in the above

    asked by Anonymous on September 14, 2014
  25. Organich Lab Help Please!!!!!!!!

    You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml of water. Is the aqueous layer the lower or the upper layer. How could you easily test this. You dissolve sodium chloride 40g. in

    asked by Anonymous on September 15, 2014
  26. Principle of operation

    Regarding extraction, the heading is: Descripton of method. Principle of operation. My description is: Extraction is based on the principle that a certain solute will dissolve in two immiscible phases, one of which is usually liquid. For example, where one

    asked by Sheryl on October 7, 2006
  27. Bio/CHEM

    11. You need to make a 1:8 ratio of DNA of two DNA types A and B (A:B). Your total aliquot should be 2ng/26 ìL. For each of the following sets, calculate how much of each extract you should use and how much TE-4: a. Extract A: 2.5 ng/20 ìL, Extract B:

    asked by Remy on May 24, 2013
  28. chemistry

    our lab experiment was Isolationa nd Identification of the Major Constituent of Clove Oil. We know the major component is Eugenol, but our professor wants us to write the equations for the extraction of eugenol from the distillate with dichloromethane and

    asked by pamela on April 20, 2011
  29. chemistry

    After synthesizing your alkyl halide, Which layer will be the organic layer?

    asked by Hola on April 16, 2009
  30. Chemistry

    when benzoic acid and quinine is dissolved to dichlromethane and 2M NaOh, what is the organic layer being formed? (i have sodium benzoate as aqueous layer of the product. is this right?)

    asked by Nancy on April 1, 2009
  31. science(chemistry) -Q for Dr.Bob

    solvent layer: 1 solid precipitate: no I ran the solvent layer I got in my unknown in the GC and I had sharp peaks in the beginning but at about 4 min on the polar column, I got a broad peak that tailed off considerably. question is, Is it water? I'm not

    asked by ~christina~ on April 20, 2009
  32. Chemistry

    A sample of plant extract is subjected to thin layer chromatography using aluminum backed plates of 0.25 mm thickness. The sample extract is suspected to contain a series of related compounds with hydroxyl and ester functional groups. Suggest a suitable

    asked by Shariah on January 23, 2017
  33. OChem

    A mixture of fluorene and benzoic acid is dissolved in diethyl ether and mixed thoroughly with an aqueous solution of NaOH. After the layers separate, what will each of the layers contain? Label the layers. Indicate the main components, not species that

    asked by David on October 20, 2011
  34. Science

    How does the C horizon form? Rainwater washes clay minerals from the A horizon to the C horizon Plant roots weather pieces of rock plants add organic material to the soil bedrock weathers, and breaks up into soil particles.** What makes up soil besides

    asked by Levi Ackerman on May 4, 2015
  35. MS SUE PLZ HELP

    How does the C horizon form? Rainwater washes clay minerals from the A horizon to the C horizon Plant roots weather pieces of rock plants add organic material to the soil bedrock weathers, and breaks up into soil particles.** What makes up soil besides

    asked by Levi Ackerman on May 4, 2015
  36. 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

    asked by Poole on September 23, 2008
  37. Chemistry II

    Eugenol, the active ingredient in cloves, has a formula of C10H12O2. What is the boiling point of a solution containing 1.14g of eugenol dissolved in 10.0g of benzene? The boiling point of benzene is 80.1C and the boiling point elevation constant for

    asked by Mandy on September 28, 2009
  38. Science

    In lab the other day we did an acid/base extraction to separate mixtures. The top layer of the mixture is the organic layer, which consists of diethyl ether and fluorine. The bottom layer is considered to be the aqueous layer, which consists of water and

    asked by Kayla on February 4, 2013
  39. CHEMISTRY!!

    Hi I need help doing this question! Thank you in advance! Suppose that a mixture contains 1,4-dimethoxybenzene and benzoic acid. An experiment is performed in which this mixture is dissolved in diethey ether, the solution is mixed with aqueous soium

    asked by Mandy on June 3, 2009
  40. Ochem

    What volume of eugenol will be present in 30 mL of distillate? The essential oil found in cloves, eugenol, can be isolated by steam distillation because it is insoluble in water and has a measurable vapor pressure at 100 °C even though it has a much

    asked by Chem on August 4, 2014
  41. 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?

    asked by Anonymous on October 2, 2010
  42. Science

    A family is planning to build a raised planting area using a blend of peat moss, mulch, and a rich organic soil in which to grow the plants. they have been told first to place on the ground a layer of material that will allow for a proper drainage each

    asked by Jen on September 20, 2016
  43. Science

    NO ONE HAS ANSWERED 1. How do microorganisms affect the quality of soil? by breaking down the remains of dead organisms*** by creating tunnels by absorbing water by increasing mechanical weathering 2. How does the C horizon form? Rainwater washes clay and

    asked by Iris on November 11, 2018
  44. ORG. CHEM- Extraction Conclusion

    Does this sound okay, if not how might i improve it? Thanks. In this lab the purpose states that the method of extraction is to separate and distil two different immiscible liquids, an organic layer and an aqueous layer. In this experiment an ion transfer

    asked by Richard on February 12, 2007
  45. CHEMISTRY

    Why must an organic layer be washed with NaOH?

    asked by Ashley on October 9, 2011
  46. Science

    A family is planning to build a raised planting area using a blend of peat moss, mulch , and a rich organic soil in which to grow the plants. They have been told first to place on the ground a layer of material that will allow for a proper drainage each

    asked by Mydogbear on May 13, 2017
  47. chemistry

    What should be the pH of the aqueous layer to extract caffeine? There are three aqueous solutions that you may choose from. Answer A. pH >14, using 2.5 M NaOH (aq) B. pH 1, using 0.1 M HCl (aq) C. pH 6.2, using 0.1 M NaHCO3 (aq)

    asked by A on May 30, 2013
  48. Organic Chem

    Why is propanol ammonia a better separator of red leaf extract in thin layer chromatography that propanol water?

    asked by Jenn on December 6, 2011
  49. chemistry

    What should be the pH of the aqueous layer to extract caffeine? There are three aqueous solutions that you may choose from. Answer A. pH >14, using 2.5 M NaOH (aq) B. pH 1, using 0.1 M HCl (aq) C. pH 6.2, using 0.1 M NaHCO3 (aq)

    asked by A on May 30, 2013
  50. chemistry

    what experimental difficulty would you encounter if you had neglected to include a drying step before evaporating the ether solution of the neutral organic compound? Water was added to the organic solvent ,but a drying agent wasn't added. So would the

    asked by jason on November 9, 2008
  51. chemistry-organic

    what happens when sodium benzoate is added to dichloromethane? what is the organic and aqueous layer of this product?

    asked by Nancy on April 1, 2009
  52. Chemistry

    How can reaction intermediates in an organic synthesis be separated and recovered using thin layer chromatography?

    asked by Yu on January 11, 2014
  53. Chemistry

    The distribution co-efficient of butanoic acid (pKa = 4.8) between water and two organic solvents are given below; Benzene D= 3.0 Octanol D= 6.2 a) which organic solvent is expected to extract the acid most efficiently from the water? explain your answer.

    asked by James on January 17, 2015
  54. Extraction

    Lab..again 0.050g benzoic acid/succinic acid/sodium benzoate. -choose 1 and put 0.050g of that compound into 5ml conical vial -add 2ml methylene chloride and 2ml water -cap vial and shake until all solid is dissolved. -let solution sit until 2 layers are

    asked by ~christina~ on September 12, 2007
  55. Chemistry II

    Eugenol, the active ingredient in cloves, has a formula of C10H12O2. What is the boiling point of a solution containing 1.14g of eugenol dissolved in 10.0g of benzene? The boiling point of benzene is 80.1C and the boiling point elevation constant for

    asked by Mandy on September 27, 2009
  56. SS

    In what way did China's isolated geography contribute to its development as a country? Isolation allowed China to develop on its own, without too much interference from foreign invasion. Isolation caused the Chinese people to lag behind the world in

    asked by Kelly on November 28, 2018
  57. British Literature 2

    In Rosencrantz and Guildenstern are Dead, how do other characters define isolation (compared to Rosencrantz and Guildenstern) and how does it effect their actions? For example, how does Hamlet's sense of isolation from the court differ from the isolation

    asked by May on April 4, 2012
  58. Chemistry

    An interference filter is to be constructed for isolation of the nitrobenzene absorption band at 1537 cm-1. (a) If it is to be based on first-order interference, what should be the thickness of the dielectric layer (refractive index of 1.34)? (b) What

    asked by Joseph on February 26, 2016
  59. solar homework

    We have discussed that a bare crystalline silicon surface contains many defects which act as SRH recombination centers. How can the surface recombination at the air/n-silicon interface be reduced? Note that you can mark more than one answer. By decreasing

    asked by Anonymous on December 25, 2016
  60. Chemistry

    An interference filter is to be constructed for isolation of the nitrobenzene absorption band at 1537 cm-1. (a) If it is to be based on first-order interference, what should be the thickness of the dielectric layer (refractive index of 1.34)? (b) What

    asked by Aaron on February 27, 2016
  61. Orgo

    Assume that during an extraction experiment you have lost track of which layer is the aqueous layer. How could you determine which layer is which by the use of a simple test?

    asked by Carrie on October 5, 2009
  62. Chemistry (Re-post)

    The distribution co-efficient of butanoic acid (pKa = 4.8) between water and two organic solvents are given below; Benzene D= 3.0 Octanol D= 6.2 a) which organic solvent is expected to extract the acid most efficiently from the water? explain your answer.

    asked by James on January 17, 2015
  63. chem

    I had to go and do a oxidation- reduction lab where: I went oxidized borneol with sodium chloride and added 0.360g racemic borneol, 1ml acetone, and .30ml glacial acetic acid. Then I heated and added through the condenser every 4 minutes .5ml 6% sodium

    asked by ~christina~ on November 24, 2007
  64. SCIENCE

    A layer of 2µm thick silicon dioxide is deposited on silicon wafer. SiO2 layer is patterned using lithography and dipped in BOE to etch the layer. While etching oxide layer, 10nm of silicon is also etched. What is the selectivity of BOE to etch SiO2, when

    asked by MEMS on August 27, 2018
  65. English

    in this sentence, what is the verb and label it linking or adjective: Rennet is an extract made from the lining of a calf's fourth stomach. I thought it would be is made and it would be action verb. My friend however thought that it was linking and that

    asked by Katie on December 11, 2006
  66. Math, algebra 2

    You are stacking soup cans for a display in a grocery store. Your manager wants you to stack 120 cans in layers, with each layer after the first having one less can then they layer before it. One can should be in the top layer. If you use all 120 cans, how

    asked by Nook on April 24, 2016
  67. English

    Rennet is an extract made from the lining of a calf's fourth stomch. In the sentence above, what is the verb and is it linking or action? I thought it would be an action verb-is made.But I am not sure. The verb in the main clause is IS. Rennnet IS an

    asked by Katie on December 11, 2006
  68. anatomy

    I am so confused about this question but What is the principal function of the subcutaneous layer of the skin? The subcutaneous fat layer, or hypodermis, bridges between the overlying dermis and the underlying body constituents. In most areas of the body

    asked by blondie on May 19, 2007
  69. 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

    asked by Anonymous on October 2, 2010
  70. Reading Help

    In hanging fire the recurring line "and momma's in the bedroom with the door closed" creates a feeling of Confidence Connection Isolation Poverty Is it Isolation?

    asked by Alex on September 26, 2013
  71. 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?

    asked by sarah on February 5, 2009
  72. Organic Chem Help :(

    For each of the solvents below, indicate whether it will be the top or bottom layer when carrying out extraction of an aqueous layer of density 1.05 g/ml. a) chloroform (bottom layer) b) hexane =????? c) toluene =?????

    asked by JuYoung on September 13, 2014
  73. science help PLS

    Examine the following diagram. Place the labeled layers in order from youngest to oldest. Diagram showing a section of rock strata. The bottommost layer is labeled 'A'; the layer directly on top of layer A is labeled 'B'; the layer directly on top of layer

    asked by Oscar on April 16, 2016
  74. Ka

    she needed a hook a line that would make the audience feel singers isolation. Q. what is the meaning of the word isolation as it is used in this sentence A. being alone b. being angry c. being restless d. being confused i pic B am i cerrect ?

    asked by sammi on April 11, 2013
  75. university chemistry

    this is for a chemistry laboratory experiment called "how much caffeine is there in instant coffee" What should be the pH of the aqueous layer to extract caffeine? There are three aqueous solutions that you may choose from. A. pH >14, using 2.5 M NaOH (aq)

    asked by angela on March 12, 2013
  76. Extraction equations

    We did an extraction. A solid including benzoid acid, p-nitroaniline, and napthalene was dissolved in dichloromethane. HCl was added to give the aqueous salt of p-nitroanaline. NaOH was added to give the aqueous salt of benzoic acid. Napthalene remained.

    asked by Sheryl on October 7, 2006
  77. Chemistry

    To determine the amount of oxalic acid in rhubarb, you chop up and extract 85.2 grams of homogenized rhubarb with hot water. The extract is treated with calcium hydroxide and you isolate 0.6914 grams of solid CaC2O4•H2O. How many grams of oxalic acid

    asked by anonymous on December 8, 2014
  78. language arts

    she needed a hook a line that would make the audience feel singers isolation. Q. what is the meaning of the word isolation as it is used in this sentence A. being alone b. being angry c. being restless d. being confused i don't understand so can You Give

    asked by sammi on April 10, 2013
  79. Ecology

    I also have to determine the deepest layer of mature soil--would it be the A Horizon, since it is decomposed organic matter? E Horizon is leaching, and anything downward is rock decomposing, so I think it has to be the A Horizon but I wanted to check.

    asked by Nathania on October 11, 2010
  80. Science

    Which of these survive Earths crust? A. Inner layer consiting of two parts B. Middle layer, density increases with depth C. Top portion called asthenosphre, thickest layer D. Thinnest under the oceans and thickest under continent's I picked C but had

    asked by Michele on August 10, 2019
  81. Science (chem)

    Calculate the weight of water that can be removed from a wet organic phase using 50.0g of magnesium sulfate. Assume that it gives the hydrate listed in table 12.2 table says hydrated: MgSO4.7H20 I'm not quite sure how I would go about this b/c when drying

    asked by ~christina~ on September 22, 2007
  82. chem

    what precautions should be observed when an aqueous sodium carbonate solution is used to extract an organic solution containing traces of acid? is it that aqueous sodium carbonate is extremely combustible, which can't be exposed to an open flame?

    asked by Jason on October 28, 2008
  83. chem

    what precautions should be observed when an aqueous sodium carbonate solution is used to extract an organic solution containing traces of acid? is it that aqueous sodium carbonate is extremely combustible, which can't be exposed to an open flame?

    asked by Jason on October 28, 2008
  84. CHEMISTRY

    The atmosphere contains about 6.8×1013 moles of ozone. If this amount of ozone gas is compressed into a thin layer around the globe (the radius of Earth is 6370 km) at STP (Standard Temperature (0°C) and Pressure (1.0 atm.)), how thick will the layer be

    asked by HELP!!!!! on March 5, 2010
  85. math

    thomas wants to build a seven layer brick wall. the bottom layer has 20 bricks and each layer of the wall that goes up has two less bricks than the layer below it. if each brick costs .50 cents to cement how money will Thomas spend on the wall ?

    asked by Alexander on April 6, 2010
  86. Biology

    In the 1940’s, Avery, MacCleod, and McCarty transformed nonencapsulated bacteria into encapsulated forms by growing the nonencapsulated cells in a cultre containing an extract made from dead encapsulated cells.  The transformed cells produced colonies

    asked by Lyndsay on December 19, 2017
  87. physics

    Animals in cold climates often depend on two layers of insulation: a layer of body fat [of thermal conductivity 0.200 W/mK] surrounded by a layer of air trapped inside fur or down. We can model a black bear (Ursus americanus) as a sphere 1.50 m in diameter

    asked by AE on December 2, 2009
  88. Analytical chem

    Cu+ reacts with neocuproine to form the coloured complex (neocuproine)2Cu+, with an absorption maximum at 454 nm. Neocuproine is particularly useful because it reacts with few other metals. The copper complex is soluble in 3-methyl-1-butanol, an organic

    asked by panchi on June 24, 2014
  89. physics

    Consider three layers of a wall. The first layer is plaster 1.0 cm thick (R = 0.033 SI units), the second layer is fiberglass insulation 8.9 cm thick (R = 2.97), and the outside layer is wood 3.0 cm thick (R = 0.33). What is the heat loss through one

    asked by jim on October 15, 2010
  90. Science

    if radiometric evidence proves that a rock layer contains a fossil that is approximately 10,000 years old, what can also be determined using the principle of superposition? A) The layers below this layer are older than 10,000 years old B) The layers below

    asked by Hannah on April 20, 2018
  91. 9th grade SCIENCE

    I have to list 5 different organic compounds; list different types for each; name; structure; properties; and uses. I am a bit confused as to what an organic compound actually is. I know it must contain a carbon, but would vegetables or household foods be

    asked by 6739 on February 26, 2010
  92. science(chem)

    Indicate the correct waste container for the following compounds choices are halogenated organic, nonhalogenated organic, aqueous, and organic solid a)hexane b)methylene chloride (dichloromethane) c)magnesium sulfate d)10% NaOH e)sodium hypochlorite for

    asked by ~christina~ on September 2, 2007
  93. 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

    asked by Sheryl on October 9, 2006
  94. Organic Chemistry

    Why does eugenol and d-limonene dissolve in dichloromethane?

    asked by Mel on February 11, 2011
  95. 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

    asked by John on March 3, 2010
  96. chem

    Suppose you need to extract an organic substance S from water into ether, where the distribution constant Kdist = [S]org/[S]aq is at first unknown. a) By testing the solubility of the material in each solvent under saturating conditions at room

    asked by lisa on February 2, 2010
  97. organic chem

    Suppose you need to extract an organic substance S from water into ether, where the distribution constant Kdist = [S]org/[S]aq is at first unknown. a) By testing the solubility of the material in each solvent under saturating conditions at room

    asked by lisa on February 2, 2010
  98. Algebra

    A group of students is arranging squares into layers to create a project. The first layer has 6 squares. The second layer has 12 squares. Which formula represents an arithmetic explicit formula to determine the number of squares in each layer? a1 = 6; an =

    asked by Harmony on September 24, 2019
  99. math

    A group of students is arranging squares into layers to create a project. The first layer has 6 squares. The second layer has 12 squares. Which formula represents an arithmetic explicit formula to determine the number of squares in each layer? a1 = 6; an =

    asked by bethann on September 24, 2019
  100. chemistry

    how did you find the percent yeild for the eugenol benzoate?

    asked by shelly on February 29, 2008

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