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April 25, 2014

Search: At what temperature does benzene boil when the external pressure is 450torr?

Number of results: 9,333

Chemistry
Benzene (C6H6) is an organic compound that boils at 80.1C. If 100.0 grams of liquid benzene at 18.5C is given 16.88 kJ of energy, what is the final temperature (in C) of the benzene? The ΔHvaporization for benzene = 31.0 kJ/mol and the specific heat of liquid benzene...
Friday, April 15, 2011 at 2:55pm by Laura

chemist
If 50.0 g of benzene, C6H6, at 25.0 C absorbs 2.71 kJ of energy in the form of heat, what is the final temperature of the benzene? The specific heat capacity of benzene is 1.72 J/g ⋅K.
Wednesday, December 26, 2012 at 2:35pm by gsdgsd

Separation process
Oil used to absorb benzene from gas is to be stripped with steam at P = 1atm to recover the benzene.Equlibrium at the operating temperature is approximated using Henry's Law.When the oil contains 10%mol of benzene,the oil's partial pressure is 5.07kPa.The oil is nonvolatile & ...
Friday, March 15, 2013 at 4:23am by Meenaakshi

problem
Benzene has a heat of vaporization of 30.72 kj/mol and a normal boiling point of 80.1. At what temperature does benzene boil when the external pressure is 480 torr?
Sunday, July 17, 2011 at 10:37pm by Anonymous

Chemistry
At a certain temperature the vapor pressure of pure benzene is measured to be 322. torr . Suppose a solution is prepared by mixing 138.g of benzene and 91.2g of heptane . Calculate the partial pressure of benzene vapor above this solution. 3 sig figs! Steps/equations are ...
Wednesday, April 11, 2012 at 4:05am by Elizabeth L.

science
benzene has a heat of vaporization of 30.72kj/mol and a normal boiling point of 80.1c. at what temperature does benzene boil when the external pressure is 445 torr
Wednesday, December 2, 2009 at 12:00pm by Bryan

Chemistry
Benzene has a heat of vaporization of 30.72kJ/mol and a normal boiling point of 80.1 ∘C. At what temperature does benzene boil when the external pressure is 480torr ?
Monday, April 7, 2014 at 12:02am by Connor

chemistry
Benzene has a heat of vaporization of 30.72kJ/mol and a normal boiling point of 80.1 degrees C. At what temperature does benzene boil when the external pressure is 470 torr?
Sunday, September 7, 2008 at 1:34pm by Erin

Chem.
Benzene has a heat of vaporization of 30.72 kj/mol and a normal boiling point of 80.1 degrees celcius. At what temperature does Benzene boil when the external pressure is 440 torr?
Wednesday, February 10, 2010 at 3:51am by Joseph

General Chemistry
The enthalpy of vaporization of benzene liquid is 33.9 kJ/mol at 298 K. How many liters of benzene gas, measured at 298 K and 95.1 mmHg, are formed when 1.54 kJ of heat is absorbed by benzene liquid at a constant temperature of 298 K? I think we use the ideal gas law, but I'm ...
Thursday, September 19, 2013 at 6:12pm by <3

Organic Chem
I have a question on how to distinguish cyclohexane from benzene through lab tests i.e. chemical reactions (except for burning and observing the amount of soot produced, because it is not a very conclusive test) So far the only thing I could think of is adding halogens to both...
Friday, January 28, 2011 at 11:36am by Hayyley

Chemistry
Benzene has a heat of vaporization of 30.72 kj/mol and a normal boiling point of 80.1 degrees celsius. At what temperature does benzene boil when the external pressure is 480 torr? Can someone show me an equation and how to solve this?
Tuesday, July 19, 2011 at 2:38pm by Anonymous

chemistry
Benzene has a heat of vaporization of 30.72kJ/mol and a normal boiling point of 80.1 C. At what temperature does benzene boil when the external pressure is 490 ? I think I have the equation setup, but I can't figure out how to solve for T2..please help
Sunday, July 10, 2011 at 9:31pm by hannah

chemistry
Benzene has a heat of vaporization of 30.72kJ/mol and a normal boiling point of 80.1 degrees C. At what temperature does benzene boil when the external pressure is 405 torr? how do i go about answering this question? i don't know where to start. am i supposed to use the ...
Sunday, February 7, 2010 at 8:45pm by Karen

science
how do you make 5-Pentyl-1,3-benzenediol from just benzene? 1.Benzene + Br2 +FeBr3-->Benzene-Br??
Tuesday, April 26, 2011 at 2:37pm by Sandy

Organic Chemistry
Hi, I have a question on how to distinguish cyclohexane from benzene through lab tests i.e. chemical reactions (except for burning and observing the amount of soot produced, because it is not a very conclusive test) So far the only thing I could think of is adding halogens to ...
Friday, January 28, 2011 at 4:54am by Hayyley

chemistry
Benzene freezes at 5.45oC. The Kf for benzene is - 5.07 oC/m. What would be the freezing point of a 0.210m solution of octane in benzene a) 1.06oC b) 4.39oC c) 6.51oC d) 10.52oC e) 5.80oC
Friday, February 3, 2012 at 4:29pm by tobe

Chemistry
How many grams of steam at 100 degrees celcuis would be required to raise the temperature of 35.8 g solid benzene (C6H6) from 5.5 - 45.0 degrees celcius. (the melting point of benzene is 5.5 degrees celcius, delta H fusion for benzene is 9.87 kj/mol, specific heat for benzen ...
Friday, February 26, 2010 at 11:00am by Anonymous

chemistry
Benzene has a heat of vaporization of 30.72kj/mol and a normal boiling point of 80.1 C . At what temperature does benzene boil when the external pressure is 445 ? This is how I am solving this problem, but when I enter the answer it says im wrong. Can someone help with the ...
Saturday, January 24, 2009 at 10:36pm by confused

Chemistry
A sample of benzene, C6H6, weighing 3.51 g was burned in an excess of oxygen in a bomb calorimeter. The temperature of the calorimeter rose from 25.00 C to 37.18 C. If the heat capacity of the calorimeter is 12.05 kJ/K, what is the molar energy of combustion for benzene? Also...
Wednesday, March 17, 2010 at 11:32pm by Marie

Chemistry
At the melting point of benzene, the DH of fusion is 9.95 kJ/mol and the DS of fusion is 35.7 J/K.mol. What is the temperature at which benzene melts?
Monday, December 6, 2010 at 2:29pm by Ashley

chemistry
Benzene has a heat of vaporization of 30.72kj/mol and a normal boiling point of 80.1 C . At what temperature does benzene boil when the external pressure is 410 ? This is how I am solving this problem, ln(415/760)= (30720/8.314)*(1/80.1 - 1/T2) It is asking to answer using two...
Sunday, January 25, 2009 at 8:41pm by Lost

Chemistry
Benzene has a vapor pressure of 100.0 Torr at 26C. A nonvolatile, nonelectrolyte compound was added to 0.309 mol benzene at 26C and the vapor pressure of the benzene in the solution decreased to 60.0 Torr. What amount (in moles) of solute molecules were added to the benzene?
Monday, February 15, 2010 at 4:19pm by Angelica

Chemistry
Calculate the number of joules required to melt 57.4g of benzene at 5.5 degrees celsius? The heat of fusion for benzene is 9.87 KJ/mol and specific heat for liquid benzene is 1.63 J/g*deg)
Friday, February 19, 2010 at 12:39pm by Jake

Chemistry
What is the freezing point of a solution of 1.17g of 1-naphthol, C10H8O, dissolved in 2.00ml of benzene at 20 degrees C? The density of benzene at 20 degrees C is 876g/ml. Kf for benzene is 5.12 degrees C/m, and benzene's normal freezing point is 5.53 degrees C.
Monday, April 4, 2011 at 3:36pm by Jake

chemistry
At a given temperature, you have a mixture of benzene (vapor pressure of pure benzene = 745 torr) and toluene (vapor pressure of pure toluene = 290 torr). The mole fraction of benzene in the vapor above the solution is 0.590. Assuming ideal behavior, calculate the mole ...
Wednesday, February 22, 2012 at 4:48pm by renee

Chemistry
When 100.0 g of an unknown nonelectrolyte is dissolved in 500.0 g of benzene, C6H6, the solution boils at 82.9C. Calculate the molecular weight (molar mass) of the unknown material. Kb for benzene is 2.53C/m and the boiling point of pure benzene is 80.1C?
Sunday, May 5, 2013 at 2:04am by ramire2

Math
a 25.00 gram sample is placed in a graduated cylinder and then the cylinder is filled to the 50.0 mL mark with benzene. the mass of benzene and solid together is 58.80 gram. assuming that the solid is insoluble in benzene and that the density of benzene is .880 g/cm^3 , ...
Monday, August 23, 2010 at 1:49am by Anne

ap chemistry
Benzene is a hydrocarbon that is commonly used as a commercial solvent. However, it is carcinogenic; i.e., accumulations in the body can cause cancer. What is the vapor pressure of benzene at 29C? The normal boiling point of benzene is 80.0C and its molar heat of ...
Monday, April 15, 2013 at 6:28pm by Anonymous

ap chemistry
Benzene is a hydrocarbon that is commonly used as a commercial solvent. However, it is carcinogenic; i.e., accumulations in the body can cause cancer. What is the vapor pressure of benzene at 29C? The normal boiling point of benzene is 80.0C and its molar heat of ...
Monday, April 15, 2013 at 6:33pm by cheri

Chemistry
A molecular compound has the empirical formula CH2. When 100mg of the compound is dissolved in 1.00 g of benzene, the solution freezes 1.75 degrees celsius lower than pure benzene. The Kf for benzene is 4.90 C/m. What is the MM of the compound?
Wednesday, February 26, 2014 at 1:44am by Andrew

general chemisty
Calculate the freezing point of a solution of 20.0 g methyl salicylate, C7H6O2, dissolved in 800 g of benzene, C6H6. Kf for benzene is 5.10C /m and the freezing point is 5.50C for benzene. A) -1.05C B) 1.05C C) 4.45C D) 6.54C
Sunday, September 26, 2010 at 8:04pm by Amy

Chemistry
1) Benzene freezes at 5.45 degrees celsius. The Kf for benzene is -5.07C/m. What would be the freezing point of a 0.210m solution of octane in benzene? I am not sure how to start this. I know the equation for freezing point is Kfp * m solute.
Sunday, February 12, 2012 at 5:38pm by Hannah

chemistry
2. When 0.354 g of an unknown nonelectrolyte compound was dissolved in 12.5 g of benzene a solution was formed that froze at 4.46C. (a) Calculate the molar mass of the unknown compound. The freezing point of benzene is 5.48C, and the Kf of benzene is 5.12 C/Molal. Show your...
Wednesday, November 14, 2012 at 9:15pm by Helen

chemistry
2. When 0.354 g of an unknown nonelectrolyte compound was dissolved in 12.5 g of benzene a solution was formed that froze at 4.46C. (a) Calculate the molar mass of the unknown compound. The freezing point of benzene is 5.48C, and the Kf of benzene is 5.12 C/Molal. Show your...
Thursday, November 15, 2012 at 7:42am by Helen

AP Chemistry
Benzene is a hydrocarbon that is commonly used as a commercial solvent. However, it is carcinogenic; i.e., accumulations in the body can cause cancer. What is the vapor pressure of benzene at 58◦C? The normal boiling point of benzene is 80.0◦C and its molar heat of...
Wednesday, March 5, 2014 at 7:18pm by Gabriella

Chemistry
What is the mole fraction of benzene C6H6 in the VAPOR PHASE from a solution consisting of a mixture of benzene and n-hexame ch3(ch2)4ch3 at 27celsius, if the total pressure above the solution is 135.2 torr? The vapor pressures of benzene and n-hexame at 27 celsius are 103 and...
Sunday, April 24, 2011 at 1:54am by Jude

chemistry
Which of the following sets of solute and solvents will make a homogeneous solution? (naphthalene is a non-polar organic molecule) 1. Water and benzene 2. Benzene and ammonium nitrate 3. Benzene and naphthalene 4. Water and naphthalene
Tuesday, November 29, 2011 at 3:14am by katie

Chemistry
Toluene, C6H5CH3, is a liquid similar to benzene, C6H6. It is the starting material for other substances, including trinitrotoluene (TNT). the molality of toluene in a solution that contains 26.2 g of toluene and 132 g of benzene. Calculate the molar fraction of toluene and ...
Thursday, March 29, 2012 at 5:53pm by MJ

Chemistry
Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 10.7 g of biphenyl in 33.9 g of benzene?
Saturday, February 18, 2012 at 10:53pm by Sarah

Chemistry
Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 18.9 g of biphenyl in 26.4 g of benzene?
Wednesday, February 22, 2012 at 12:10am by Josh

Chem 2
Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 12.5 g of biphenyl in 27.9 g of benzene?
Saturday, July 14, 2012 at 5:28pm by Payie

Science
Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 15.2 g of biphenyl in 29.5 g of benzene?
Tuesday, October 9, 2012 at 12:52pm by Maria

chemistry
Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 19.9 g of biphenyl in 34.3 g of benzene?
Monday, January 21, 2013 at 9:05pm by Brianna

Chemistry
Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 19.6 g of biphenyl in 25.1 g of benzene?
Tuesday, January 29, 2013 at 9:23pm by Gabrielle

chemistry
Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 11.1 g of biphenyl in 29.1 g of benzene?
Friday, February 22, 2013 at 7:42pm by Anonymous

Chemistry
Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 17.3 g of biphenyl in 34.0 g of benzene?
Monday, February 25, 2013 at 4:52am by Max

Chemistry Science
A 15.0 g sample of an unknown compound is dissolved in 100.0 g of benzene. The boiling point is raised 2.67 oC above the boiling point of pure benzene. What is the molar mass of the sample? Kb for benzene is 2.67oC/m.
Tuesday, May 29, 2012 at 5:35pm by science girl

Chemistry
Biphenyl, C12H10, is a nonvolatile, non ionizing solute that is soluble in benzene, C6H6. At 25 C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 14.3 g of biphenyl in 25.8 g of benzene?
Saturday, February 9, 2013 at 3:32pm by Felicia

Pacific Union College
Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 17.5 g of biphenyl in 28.8 g of benzene?
Sunday, February 24, 2013 at 11:26am by Nick

college chem
Biphenyl, C12H10, is a nonvolatile, non ionizing solute that is soluble in benzene, C6H6. At 25 C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 14.3 g of biphenyl in 25.8 g of benzene?
Saturday, February 9, 2013 at 5:42pm by Zachary

Chemistry
**When 0.187 g of benzene,C6H6, is burned in a bomb calorimeter, the surrounding water bath rises in temperature by 7.48 C. ** Assuming that the bath contains 250.0 g of water and that the calorimeter itself absorbs a negligible amount of heat, calculate combustion energies (...
Wednesday, February 17, 2010 at 1:50pm by Julie

Chemistry
When 0.354 g of an unknown nonelectrolyte compound was dissolved in 12.5 g of benzene a solution was formed that froze at 4.46 degrees C. Calculate the molar mass of the unknown compound. The freezing point of benzene if 5.48 degrees C, and the Kf of benzene is 5.12 degrees C/...
Tuesday, October 15, 2013 at 12:54pm by Shines

Chemistry
Analysis of a compound indicates that it is 49.02% carbon, 2.743% hydrogen, and 48.23% chlorine by mass. A solution is prepared by dissolving 3.150 grams of the compound in 25.00 grams of benzene, C6H6. Benzene has a normal freezing point of 5.50degreeC and the solution ...
Monday, January 10, 2011 at 7:56am by Tracy

Chemistry
Analysis of a compound indicates that it is 49.02% carbon, 2.743% hydrogen, and 48.23% chlorine by mass. A solution is prepared by dissolving 3.150 grams of the compound in 25.00 grams of benzene, C6H6. Benzene has a normal freezing point of 5.50degreeC and the solution ...
Monday, January 10, 2011 at 11:39am by Tracy

Chemistry
Analysis of a compound indicates that it is 49.02% carbon, 2.743% hydrogen, and 48.23% chlorine by mass. A solution is prepared by dissolving 3.150 grams of the compound in 25.00 grams of benzene, C6H6. Benzene has a normal freezing point of 5.50degreeC and the solution ...
Monday, January 10, 2011 at 3:14pm by Tracy

Chemisty-Freezing Points
The freezing point of benzene is 5.5C. What is the freezing point of a solution of 8.50 g of naphthalene (C10H8) in 425 g of benzene (Kf of benzene = 4.90C/m)? delta T = Kf m m = mols/kg solvent. Change 8.5 g naphthalene to mols and 425 g benzene to kg. That will get delta T...
Sunday, January 21, 2007 at 9:51pm by Swim4eva

chemistry
What is the mole ratio of benzene (C6H6) to n-octane in the vapor above a solution of 15.0% benzene and 85.0% n-octane by mass at 25 degrees Celcius? the vapor pressures of n-octane and benzene are 11 torr and 95 torr.
Friday, September 14, 2012 at 9:18pm by Wiped Out

Chemistry
Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure (in torr) of a solution made from dissolving 16.6 g of biphenyl in 26.0 g of benzene?
Wednesday, January 23, 2013 at 2:31am by Ocean

chemistry
10.0 g sample of p-dichlorobenzene, a component of mothballs, is dissolved in 80.0 g of benzene, C6H6. The freezing-point of the solution is 1.20oC. The freezing point of benzene is 5.48oC. The molal freezing point constant, kf, for benzene is 5.12oC/m. Calculate the apparent...
Thursday, August 6, 2009 at 12:24pm by Jim_R

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 benzene is 2.53C/m. I got ...
Sunday, September 27, 2009 at 8:24pm by Mandy

Chem.
Benzene has a heat of vaporization of 30.72 kj/mol and a normal boiling point of 80.1 degrees celcius. At what temperature does Benzene boil when the external pressure is 440 torr? Since...I didn't get the right answer. I'll just show my work and see if anyone can help me. ...
Wednesday, February 10, 2010 at 6:14pm by Joseph

AP Chemistry
1,2-Benzanthracene is a yellow-brown nonvolatile solid with molecular weight 228.29g*mol-1. an 18.2632-g sample of 1,2-benzanthracene is dissolved in 250.0 g of benzene, C6H6. Whta is the vapor pressure of this solution at 25C, in millimeters of mergury, if the vapor pressure ...
Monday, March 10, 2014 at 7:10pm by Ella

chemistry
(a) Calculate the molar mass of the unknown compound. The freezing point of benzene is 5.48C, and the Kf of benzene is 5.12 C/Molal. Show your work
Wednesday, November 14, 2012 at 9:09pm by Helen

Organic Chemistry
How do you synthesize methysulfonyl benzene from Benzene?
Saturday, March 10, 2012 at 5:28pm by Tom

chemistry
The vapor pressure of benzene, C6H6, is 60.0 mm Hg at 13.5C. The molar heat of vaporization of benzene is 30.8 kJ/mol and R = 8.31 10-3 kJ/molK. What is the vapor pressure of benzene at 70.0C?
Wednesday, December 5, 2012 at 9:31pm by Sam

Chemistry
You have 150 ml of a solution of benzoic acid in water estimated to contain about 5 g of acid. The distribution coefficient of benzoic acid in benzene and water is approx 10. Calculate the amount of acid that would be left in the water solution after three 50 ml extractions ...
Monday, November 22, 2010 at 8:11am by Nat

Chemistry
You have 150 ml of a solution of benzoic acid in water estimated to contain about 5 g of acid. The distribution coefficient of benzoic acid in benzene and water is approx 10. Calculate the amount of acid that would be left in the water solution after three 50 ml extractions ...
Monday, November 22, 2010 at 8:53pm by Nat

Chemistry
My question is why is benzene less reactive than 1,3,5-cyclohexatriene? I know that benzene does not undergo addition reactions and is extremely stable to oxidizing reagents. C atoms in benzene are connected by delocalized double bonds which make them available to all carbon ...
Sunday, February 10, 2008 at 5:26pm by Megan

Chemistry
My question is why is benzene less reactive than 1,3,5-cyclohexatriene? I know that benzene does not undergo addition reactions and is extremely stable to oxidizing reagents. C atoms in benzene are connected by delocalized double bonds which make them available to all carbon ...
Sunday, February 10, 2008 at 9:31pm by Megan

chemistry
6.70 A sample of benzene, C6H6, weighing 3.51g was burned in an excess of oxygen in bomb calorimeter. The temperature of the calorimeter rose from 25.00C to 37.18C. If the heat capacity of the calorimeter and contents was 12.05kJ/C, what is the value of q for burning 1.25 mol ...
Thursday, June 25, 2009 at 12:03pm by Capacino

chem- molar weight
I worked this problem, I would like to know if I did it correctly, I think I missed something, I'm not sure..... When a 20.0 gram sample of an unknown compound is dissolved in 500 grams of benzene, the freezing pointof the resulting solution was observed to be 3.77 degrees C. ...
Friday, September 7, 2007 at 7:48pm by manny

Chemistry
My question is why is benzene less reactive than 1,3,5-cyclohexatriene? I cannot find anything on 1,3,5 cyclohexatriene and why it is more reactive. I know that benzene does not undergo addition reactions and is extremely stable to oxidizing reagents. C atoms in benzene are ...
Monday, February 11, 2008 at 1:28pm by Megan

Chemistry
What is the freezing point of a soluton is which 10.0 g of naphthalene [C10H8(s)] is dissolved in 50.0 g of benzene [C6H6(l)]? Extra info you might need: benzene= 5.12 degrees C m^-1 Answer should be: -2.46
Monday, February 25, 2013 at 2:08am by Jacqueline

Chemistry
What is the freezing point of a soluton is which 10.0 g of naphthalene [C10H8(s)] is dissolved in 50.0 g of benzene [C6H6(l)]? Extra info you might need: benzene= 5.12 degrees C m^-1 Answer should be: -2.46
Monday, February 25, 2013 at 2:08am by Jacqueline

chemistry
At 20. C, the vapor pressure of toluene is 22 millimeters of mercury and that of benzene is 75 millimeters of mercury. An ideal solution, equimolar in toluene and benzene, is prepared. At 20. C, what is the mole fraction of benzene in the vapor in equilibrium with this ...
Monday, February 2, 2009 at 12:09am by Unsure

chemistry!!!!!!
What structure is common to all aromatic hydrocarbons? You must be referring to the benzene ring, either separately or in combination with alkyl groups or other aromatic structures. UM.. SORRY DrBob222 BUT i THINK IT IS JUST THE benzene! i DID SOME REASEARCH SO MAYBE I AM ...
Friday, June 16, 2006 at 12:18pm by rosable

Chemistry
The freezing point of benzene is 5.5C. What is the freezing point of a solution of 8.50 g of naphthalene (C10H8) in 425 g of benzene (Kf of benzene = 4.90C/m)? I worked this problem for someone just a couple of days ago. delta T = kf m kf = 4.90 m = molality = mols/kg. ...
Wednesday, January 24, 2007 at 2:47pm by Kelly

chemistry:URGENT
How to convert (a)ethane to propanone (b)propanone to ethane (c)isobutane to propanone (d)methane to benzene (e)benzene to methane (f)ethyne to methane (g)propanone to benzene (h)ethene to propene (i)Propan-2-ol to Propan-1-ol using:oxidation,reduction,halogenation,combustion,...
Monday, March 1, 2010 at 7:46am by sashank

chemisty
The molar heat capacity of C6H6(ℓ) is 136 J/mol ◦C and of C6H6(g) is 81.6 J/mol ◦C. The molar heat of fusion for benzene is 9.92 kJ/mol and its molar heat of vaporization is 30.8 kJ/mol. The melting point of benzene is 5.5 ◦C, its boiling point is 80...
Wednesday, January 11, 2012 at 4:41pm by bob

Chemistry
Benzene has a vapor pressure of 100.0 Torr at 26C. A nonvolatile, nonelectrolyte compound was added to 0.309 mol benzene at 26C and the vapor pressure of the benzene in the solution decreased to 60.0 Torr. What amount (in moles) of solute molecules were added to the benzene...
Monday, February 15, 2010 at 7:48pm by Angelica

General Chemistry 2
The molar heat of vaporization of benzene is 31kj/mol. Calculate the entropy change for the liquid vapor equilibrium. At 1 atm pressure, benzene boils at 80.1 degrees Celsius.
Sunday, April 10, 2011 at 10:05am by Tiffany

Chemistry
Which pair of compounds will form a solution? A) Benzene (C6H6) and Hexane (C6H14) B) Na2SO4 and Benzene C) NaCl and Hexane
Friday, April 20, 2012 at 9:49pm by Emily

chem urgent
Calculate the mass ( kg ) of the solute benzene and the mass ( kg ) of the solvent acetone that should be combined to generate 1.51 kg of a solution that is 0.275 m benzene.
Friday, February 6, 2009 at 1:09am by henry

chemistry
Benzene and cyclohexane molecules both contain six-membered rings. Benzene is a planar molecule, and cyclohexane is nonplanar. Explain.
Friday, October 21, 2011 at 10:22am by Amber

chem
the following procedure may be used to determine the density of a granular material. A sample of a granular material weighing 4.35 grams is placed in a 15 mL flask and then completely filled with benzene (liquid) the density of which is .879g/cc. The granular material and ...
Monday, November 8, 2010 at 7:54pm by B.o.B

chem
If a student needs to prepare 50g of bromobenzene and expects no more than a 75% yieldl, how much benzene should the student begin with if the yield is 75%? C6H6(l)+ Br2(l) --> C6H5Br(l)+ HBr(g) I calculated the moles of C6H5Br as .3185. But ion the end my answer is 18.7g ...
Thursday, October 8, 2009 at 9:04pm by Sindy

chemistry
a mixture is prepared using equal masses of two volatile liquid benzene, C6H6 and ethanol C2H5OH. what is the mole fraction of benzene in this mixture?
Sunday, October 26, 2008 at 8:04pm by tomi

chem
a compound containing only boron, nitrogen and hydrogen was found to be 40.3% B, 52.2%N, and 7.5% H by mass. If 3.301g of this compound is dissolved in 50.00g of benzene, the solution produced freezes at 1.30 degrees celsius. If Kf(freezing point depression constant) for ...
Friday, November 7, 2008 at 3:27pm by tomi

CHEM
Compare the value you obtained from average bond energies: (260Kj) to the actual standard enthalpy of formation of gaseous benzene, 82.9 kj. What does the difference between these two values tell you about the stability of benzene?
Tuesday, November 8, 2011 at 1:11am by ALISON

Organic Chemistry
Benzene is often produced as a by-product during the synthesis of phenylmagnesium bromide. how can its formation be explained? Write a balanced chemical equation for the formation of benzene.
Friday, February 27, 2009 at 12:23am by Blair

chemistry
HELPPPP!!!! A mixture is prepared using equal masses of the two volatile liquids benzene, C6H6, and ethanol, C2H5OH. What is the mole fraction of benzene in this mixture?
Thursday, November 7, 2013 at 4:27am by Bobby

Chemistry
Benzene (C6H6) and toluene (C5H5CH3) form nearly ideal solutions. At 20C the vapor pressure of benzene is 74.7 Torr and that of toluene is 22.3 Torr. a) Find the equilibrium partial pressures above a solution of 100.0 g benzene and 100.0 g toluene. b) Find the mole fractions ...
Thursday, November 14, 2013 at 8:35pm by Chris

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 benzene is 2.53C/m. I got...
Monday, September 28, 2009 at 2:28am by Mandy

Organic Chemistry
can you please help me with naming the following benzene? i have tried several times. it is a benzene that has 2 substiuents - a ethyl on the 1st point, and an Iodine on the 3rd. i put: 1-ethyl-3-iodobenzene but it keeps saying it is wrong?
Thursday, January 21, 2010 at 8:31pm by Tina

Chemistry
Could someone answer this question so I understand it. Thanks cyclopentanol ----> cyclopentane Which of the following sets of reagents could be used to accomplish the above transformation? a)TsCl/Benzene & LiAlH4 b)H2SO4 & H2/Pd c)TsCl/Benzene & KOtBU/BuOH & H2/Pt d)All of ...
Sunday, April 10, 2011 at 8:34pm by Jules

Chemistry
Could someone answer this question so I understand it. Thanks cyclopentanol ----> cyclopentane Which of the following sets of reagents could be used to accomplish the above transformation? a)TsCl/Benzene & LiAlH4 b)H2SO4 & H2/Pd c)TsCl/Benzene & KOtBU/BuOH & H2/Pt d)All of ...
Monday, April 11, 2011 at 8:16am by Jules

Chemistry
Toluene, C6H5CH3, is a liquid similar to benzene, C6H6. It is the starting material for other substances, including trinitrotoluene (TNT). Find the molality of toluene in a solution that contains 26.2 g of toluene and 132 g of benzene.
Thursday, March 29, 2012 at 5:52pm by MJ

chemistry
2) Toluene, C6H5CH3, is a liquid similar to benzene, C6H6. It is the starting material for other substances, including trinitrotoluene (TNT). Find the molality of toluene in a solution that contains 25.8 g of toluene and 135 g of benzene.
Monday, October 15, 2012 at 4:33pm by Mike

Chemistry
If 152 g of a cyclohexyl bromide is dissolved in 932 g of benzene solvent, calculate the boiling temperature of the solution. Consider if the solute is an electrolyte. i kinda get it but im not really sure what the "i" would be equal to.
Tuesday, March 2, 2010 at 3:30pm by Kobe

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