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July 22, 2014

Search: n-pentane and 1-butanol

Number of results: 142

Chemistry
Two liquids, n-pentane and 1-butanol, have nearly the same molecular weight, but significantly different temperature values. Why is there a difference between these two substances, based on their intermolecular forces? temperature values? Do you mean boiling points? We are ...
January 22, 2007 by Chemwiz

Chemistry
Which alcohol has the strongest intermolecular force of attraction? The weakest? Explain. A. 1-Propanol B. 1-Butanol C. n-pentane D. n-hexane E. methanol F. ethanol We shall be happy to critique your thinking. Hint: look at the hydrogen bonding from the alcohols (and hydrogen ...
January 22, 2007 by Chemwiz

Science
Explain why pentane has a significantly higher vapor pressure than 1-butanol?
January 30, 2014 by Jacky

chem
a simple hwk question.. i don't understand what i need to do.. 1-butanol (shown below) burns in the presence of oxygen to give off carbon dioxide and water by the following reaction: C4H9OH + 6 O2 ==> 4 CO2 + 5 H2O If 40.88 mL of 1-butanol burns completely, how many grams ...
January 24, 2013 by wll.i.am

Organic Chemistry
I just want to check if I am correct on this Q: What is the major product formed when 1-butene reacts with water in the presence of dilute sulphuric acid? a) 1-butanol b) 2-butanol c) butane d) 1-methylpropanol I "think" that it "should" be "B" (2-butanol)???
February 24, 2008 by K

chem hwk
a simple hwk question.. i don't understand what i need to do.. 1-butanol (shown below) burns in the presence of oxygen to give off carbon dioxide and water by the following reaction: C4H9OH + 6 O2 ==> 4 CO2 + 5 H2O If 40.88 mL of 1-butanol burns completely, how many grams ...
January 24, 2013 by wll.i.am

college chemistry
Pentane, C5H12, and hexane, C6H14, combine to form an ideal solution. At 25⁰C the vapor pressure of pentane is 511 torr and that of hexane is 150 torr. In the vapor over a pentane-hexane solution at 25⁰C, the mole fraction of pentane is 0.15. What is the mole ...
April 28, 2010 by Stephanie

chemistry
1-butanol (shown below) burns in the presence of oxygen to give off carbon dioxide and water by the following reaction: C4H9OH + 6 O2 ==> 4 CO2 + 5 H2O If 40.88 mL of 1-butanol burns completely, how many grams of 1-butanol have burned? grams =33.1 bu then Now, How many ...
January 25, 2013 by wll.i.am

Chemistry
Pentane is a small liquid hydrocarbon, between propane and gasoline in size C5H12. The density of pentane is 0.626g/ml and its enthalpy of combustion is ΔHcomb =-3535kj/mol. Estimate the fuel valve and the fuel density of pentane.
November 8, 2012 by Brittany

chemistry
n-pentane and 1-butanol have nearly the same molecular weights but significantly different change in temperature values. explain the difference in change in temperature values of these substances based on their intermolecular forces.
February 4, 2010 by lelia

Science
Predict change in temperature for 1-butanol, CHSCH2CH2CH2OH, if same experiment were using 1-butanol?
January 30, 2014 by Jacky

chemistry
At 25C the vapour pressure of pure pentane is 511 torr and that of hexane is 150. torr. What is the mole fraction of pentane in a pentane-hexane solution that has a vapour pressure of 333 torr at 25C?
December 1, 2012 by paul

physics
Again, I know I keep posting questions but I'm begging you for help. At 25C the vapour pressure of pure pentane is 511 torr and that of hexane is 150. torr. What is the mole fraction of pentane in a pentane-hexane solution that has a vapour pressure of 339 torr at 25C? What ...
April 11, 2012 by anonymous

Chemistry
the solubility of 1-butanol in water is 7.9g per 100g of water. What is the maximum amount of 1-butanol that will dissolve in 5.9g of water
May 31, 2014 by Veronica

Chem
Which one has an optical isomer? butryic acid t-butanol 2-bromo-2-methylbutane 2-amino-2-methyl-butal-1-ol I know it's not t-butanol or 2-bromo-2-methylbutane. Is it 2-amino-2-methyl-butal-1-ol? Correction to above: 2-amino-2-methyl-butan-1-ol (Butan is with an "n" not "l" IF ...
February 9, 2007 by Marisol

chemistry
The reaction of sec-butylmagnesium bromide with formaldehyde followed by hydrolysis yields? 2,2-dimethyl-1-pentanol 2-butanol 2-methyl-1-butanol 2-pentanol 2,2-dimethyl-1-propanol
November 8, 2008 by Jake

chemistry HMWK help.......
you decide to have a BBQ in your backyard. you have 1Kg of pentane (C5H12) in the tank. What is the amount of carbon dioxide (in mass and mols) you will be contributing to the greenhouse gas effect by using up that 1Kg of pentane? plz.... need the answer with steps...thank you
November 11, 2010 by tarkan

chemistry
Name the following compounds (with absolute configurations) and are they enantiomers, diastereomers or structure isomers or no relation at all? img34.imageshack.us/i/namethese.jpg/ i think they are disteromers and their names are 1] 1S, 2S - (2-bromo - 3,4 - dimethyl pentane) ...
March 17, 2011 by ben

chemistry
While researching energy values of fuels, a chemist designed an experiment to find out the heat of combustion of pentane. Using the known hexane heat of combustion of hexane = 4650kJ/mol and the data below calculate the heat of combustion of pentane. Set up= copper beaker 42....
March 28, 2010 by sarah

chemistry
While researching energy values of fuels, a chemist designed an experiment to find out the heat of combustion of pentane. Using the known hexane heat of combustion of hexane = 4650kJ/mol and the data below calculate the heat of combustion of pentane. Set up= copper beaker 42....
March 28, 2010 by sarah

chemistry
From the following combustion: 1-butanol + oxygen = carbon dioxide + water. How many grams of carbon dioxide and water are produced when 130.6 grams of 1-butanol is completely burned? Please help me! I have not a clue! Thanks so much!
November 28, 2009 by Turtle Lover

Chemistry
Diethyl ether has a boiling point of 34.5C, and 1-butanol has a boiling point of 117C. Both of these compounds have the same numbers and types of atoms. Explain the difference in their boiling points. The answer I found was that: only 1-butanol can form hydrogen bonds. But I ...
December 6, 2010 by Sara

Chem
A sample of 2-butanol has a specific rotation of 3.25. Determine the % ee and molecular composition of this sample. The sepcific rotation of pure (+)-2-butanol is +13.0. is it (3.25/13.0)x100%= 25%... i'm a little confused on the molecular composition though.
November 18, 2008 by Jason

chemistry HMWK help....... REPOST
you decide to have a BBQ in your backyard. you have 1Kg of pentane (C5H12) in the tank. What is the amount of carbon dioxide (in mass and mols) you will be contributing to the greenhouse gas effect by using up that 1Kg of pentane? plz.... need the answer with steps...thank you...
November 11, 2010 by tarkan

organic chemistry
A sample of 2-butanol has a specific rotation of -9.75 degrees. Determine the % ee (enantiomeric excess) and the molecular composition of this sample. The specific rotation of pure (+)-2-butanol is +13.0 degrees.
November 15, 2008 by Jenn

chem
balance 1-butanol + oxygen=carbon dioxide+water how many grams of carbon dioxide and water are produced when 130.6 grams of 1-butanol is completly burned?
December 1, 2009 by lynn

college chemistry
An electrical heater is used to add 19.50 kJ of heat to a constant-volume calorimeter. The temperature of the calorimeter increases by 4.50C. When 1.75 g of butanol (C4H9OH) is burned in the same calorimeter, the temperature increases by 14.58C. Calculate the molar heat of ...
October 16, 2010 by jojo

science(chemistry)
I have a question about TLC plate solvents. What solvents will leave stains on a plate with a TLC plate out of the ones below and why?) (n-Octane, n-Hexane, Decane, Acetone, 1-Propanol, 2-Propanol, Ethanol, Toluene, Cyclohexane, Methanol, n-Heptane, n-Pentane, Butanol) I saw 2...
April 24, 2009 by ~christina~

Chemistry
A sample of 2-methyl-1-butanol has a specific rotation of -3.25. Pure (R)-2-methyl-1-butanol has a specific rotation of +5.75. Determine the %ee and molecular composition of the sample.
March 2, 2010 by Chad

Science
Is the molar enthalpy of combustion of pentane the same as the molar enthalpy of formation of pentane? No. The molar enthalpy for the combustion is for the reacton C5H10 + (15/2)O2 ==> 5CO2 + 5H2O The molar enthalpy for the formaton is 5C(graphite) + 5H2(g) ==> C5H10(l) ...
September 21, 2006 by B

Chemistry
A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pressure of 235 torr. Pure pentane and hexane have vapor pressures of 425 torr and 151 torr, respectively, at room temperature. What is the mole fraction composition of the mixture?
February 11, 2013 by Emma

mole fraction
A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pressure of 241 torr. Pure pentane and hexane have vapor pressures of 425 torr and 151 torr, respectively, at room temperature. What is the mole fraction of hexane? (Assume ideal ...
January 30, 2010 by Kyle

O CHEM - dr. bob
1. What is the maximum volume (at STP) of the butene mixture that could be obtained by the dehydration of 81 mg of 2-butanol? 2. When 2-methylpropene is bubbled into dilute sulfuric acid at room temperature, it appears to dissolve. What new substance has been formed? Responses...
January 7, 2009 by Dora

Organic Chemistry- help Dr. Bob
1. What is the maximum volume (at STP) of the butene mixture that could be obtained by the dehydration of 81 mg of 2-butanol? 2. When 2-methylpropene is bubbled into dilute sulfuric acid at room temperature, it appears to dissolve. What new substance has been formed? Responses...
January 7, 2009 by dora

Chemistry, Please HELP!
What are the names of the seven isomers of C4H10O? A = t-butyl alcohol (2-methyl-2-propanol) B = sec-butyl alcohol (2-butanol) C = butyl alcohol (1-butanol) D = isobutyl alcohol (2-methyl-1-propanol) Other constitutional isomers are ethers: diethyl ether methyl propyl ether ...
November 7, 2006 by David

chemistry
These are short and simple. :) I've included my answers, tell me if I am wrong please. CH3 is attached to a carbon on a pentane ring. Is the hybridization of the carbon sp3? NH connects a benzene ring to two benzene rings. Is the hybridization of the nitrogen sp2? OH is ...
March 16, 2011 by s

chemistry
These are short and simple. :) I've included my answers, tell me if I am wrong please. CH3 is attached to a carbon on a pentane ring. Is the hybridization of the carbon sp3? NH connects a benzene ring to two benzene rings. Is the hybridization of the nitrogen sp2? OH is ...
March 16, 2011 by s

Org. Chem.
Explain these results by considering the polarities of the alcohols and water. - 1-octanol is insoluble in water - 1-butanol is partially soluble in water Explain in terms of polarities for: - 1-octanol is soluble in hexane - 1-butanol is soluble in hexane - methyl alcohol is ...
September 14, 2009 by Chelsea

Chemistry
Name the compounds CH3CH2CHCH2CH3 - Is this 3-Pentane? Thanks
May 9, 2013 by Shadow

CHEMISTY
WHICH HAS THE HIGHER BOILING POINT PENTANE OR HEPTANE
January 14, 2013 by Anonymous

Organic chemistry
what is the line structure for 2-butanol?
February 4, 2009 by Andrea

Organic chemistry
2- butanol + 2-pentanoic acid
June 16, 2011 by Shark

chemisty
how do you convert 50 microliters of 2 butanol to moles?
March 12, 2012 by jessica

chemistry
name an isomer of pentane (that is not cyclic)and write down its structure
February 10, 2008 by luli

Chemistry
Name an isomer of pentane (that is not cyclic) and write down its structure.
February 11, 2009 by Laura

Chemistry
Name an isomer of pentane (that is not cyclic) and write down its structure.
February 14, 2009 by Laura

ap chemistry
pentane is burned completely in oxygen gas. what is the balanced equation?
January 2, 2011 by erin

CHEM (HELP PLS)
Suggest the syntheses of cadaverine (pentane-1,5-diamine) from 1,5-Dibromopentane
April 30, 2011 by lauder

chemsitry
you start with 150.0g of pentane and 500.0L of O2. how many grams of H2O will you make?
March 29, 2013 by sonya

chemistry
what are the structures and iupac names of the isomers of 2-butanol.
March 20, 2009 by Ebony

Science
Give the condensed structural formula for 1-butanol
October 21, 2010 by Ashley

Chemistry
If 84 g of CO2 were produced, how many grams of butanol were burned?
April 25, 2012 by Kali

Chemistry
Will 1-propanol and 1-butanol form an ideal solution?
April 29, 2012 by Sinmei

chemistry
what is the stereochemical formula for water, pentane, ethanol, acetone, and methanol. please help!
July 30, 2010 by Anonymous

Chemistry
Skeletal structural formulas of pentane,2 methyl butane and 2,2 dimethyl propane
September 24, 2011 by Gift

chemistry
which liquids are effected by an electric field and why 1-chloropropane, pentane, tetrachloromethane, cyclopentane
April 24, 2012 by Naila

O-CHEM (PLEASE CHECK)
How many stereoisomers are there for 1,2-dichlorocyclopentane?: a) 1 b) 2 c) 3 d) 4 answer: "B" (2)??? or: "D" (4)??? How many stereoisomers are possible for: cortisone acetate?: a) 32 b) 64 c) 128 d) 256 answer: "B" (64)??? How many stereoisomers are possible for Prilosec?: a...
February 24, 2008 by K

CHEMISTRY
WHAT IS THE COST PER KJ TO PRODUCE METHANOL, ETHANOL, PARIFFIN, PROPANOL,AND BUTANOL?
April 16, 2012 by JGU

Chemistry
Predict the product(s) and write a balanced equation for the following redox reaction: pentane (C5H12) + oxygen ---->
November 6, 2009 by L

Chemistry
Which compound in each pair would you expect to be more soluble in water? dibutyl ether or 1-butanol Why?
November 6, 2011 by Steph

chem
If pentane,hexane and hexanol are heated evenly at different altitudes, rank them according to the order in which you would expect them to begin boiling.
March 29, 2009 by alisha

Chem
What are the organic side reactions and products that can occur when 1-butanol is treated with NaBr and H2SO4? Any help would be great, thanks.
October 30, 2007 by Meche

organic chem
Name the ester obtained when the alcohol is reacted with 2-ethylpentanoic acid? 1. 2 -propanol 2. 2-butanol 3, phenol
February 20, 2013 by meghan

Chemistry
How many kcal of heat energy are required or released when 1.73 moles of butanol , C4H9OH, is warmed from -175.8 degrees F to 360.9 degrees F? The following information concerning butanol applies: normal melting point: 12.5 degrees C normal boiling point: 162.8 degrees C Cp (s...
September 30, 2007 by Garret

Organic Chem
what is the equation including the mechanism for the reaction of 1-butanol with NaCl+ NaBr in H2S04 What are the equations for the side reactions?
October 26, 2009 by Lori

Chemistry
When secondary alcohol oxidized it produces alkanes. Draw the structure of 2,2 dimethyl 3-butanol + oxygen and give the names for it.
September 4, 2012 by Jeconiah

chemistry
how many grams of oxygen is needed to burn 500 grams of pentane?
October 20, 2013 by Anonymous

Science
What kind of carbon-carbon bonds are found in alkane molecules? Is the answer Pentane
October 29, 2011 by Shirley

chem
If 34.1 grams of pentane (C5H12) are burned in excess oxygen, how many grams of H2O will be produced?
February 26, 2014 by Anonymous

chemistry
Reaction with Felings solution,if adding 2-butanol to potassium dichromate, in this experiment what spiecfic organic product would be form and structure.
March 25, 2007 by Hasina

Chemistry
Please help Butanol's structural formula is C4H10, why? [Methanol?Ethanol?Pentanol?) Pentan-1-ol exists as several different isomers. I don't know how to draw them.
March 11, 2008 by Anonymous

chemistry
which of the following chemical substances would you expect to exhibit the greatest degree of hydrogen bonding? A. ethanol B.propanol C. methanol D. butanol
March 16, 2012 by jessica

Org. Chem.
are 1-octanol and 1-butanol polar or nonpolar? I think slightly polar?
September 14, 2009 by Chelsea

Organic Chemistry 1
write a step-by-step mechanism for the reaction of 1-butanol with sodium bromide and sulfuric acid.
March 17, 2010 by Brianna

science
Give the condensed structural formula for 1-butanol. (Type your answer using the format CO2 for CO2.)
October 23, 2010 by Ashley

chemistry
which pair(s) of liquids will be miscible ? H2O AND CH3CH2CH2CH2CH3(PENTANE) C6H6 (BENZENE) AND CCl4(CHLOROFORM) C2H5OH (ETHANOL) AND CH3COOH(ACETIC ACID) how do you know if they are miscible?
March 16, 2012 by kim

chemistry
From the following combustion: 1-butanol + oxygen+ carbon dioxide + water. How many grams of carbon dioxide and water are produced when 130.6 grams of 1-butanol is completely burned? I wrote out the equation and got C4H10) + 02= CO2 + H2O. i balanced the equation and got ...
November 29, 2009 by Turtle Lover

chemistry
2-Methyl-2-propanol (tert-butanol) reacts to give 2-chloro-2-methylpropane (tertbutyl chloride) and 2-methyl-1-propene. The reaction mechanisms are:
September 8, 2010 by darali

chemistry
molar enthalpy of combustion for pentane? Mass C5H12= 2.15g Mass H2O= 1.24kg Initial temp= 18.4C Final temp= 37.6C
January 10, 2013 by shyanne

Organic Chemistry
Water/methanol and water/acetone are viable solvent systems for recrystallization,but water/chloroform and water/pentane are not. Briefly explain in 1-2 sentences.
October 13, 2013 by Cheech

Ferdinand Marcos University
What are the condensed structure of each of the following: a.)2-pentene b.)1chloro 3 metyl 2 -pentene c.)3 methyl 1 butyne d.)2,3dimethyl pentane e.)2 ethyl 1 methyl hexane
January 11, 2011 by Dangadang

chem
Hers's a question im not sure how to do Write a mechanism for the acid-catalyzed transesterification reaction of ethyl acetate with 1-butanol, which gives butyl acetate. Thank you soo much!!!!!!!!!!!!!!!!!!!!!!
August 25, 2007 by manny

Chemistry Lab
we reacted acetic acid with butanol and formed butyl acetate which is supposed to smell like banana but it smelled like sharpie/nail polish remover why might this be
January 22, 2012 by Bob

O Chem
1. What is the maximum volume (at STP) of the butene mixture that could be obtained by the dehydration of 81 mg of 2-butanol? 2. When 2-methylpropene is bubbled into dilute sulfuric acid at room temperature, it appears to dissolve. What new substance has been formed?
January 5, 2009 by dora

LAB!!
I have to find the molar enthalpy of combustion of pentane. I have this info: 5C(s) + 6H2 >>> C5H12 Hf= -173.5kJ C+O2>>> CO2 Hf= -393.5kJ H2 + 1/2O2 >>> H2O Hf= -241.8kJ H2O >>> H2O Hf= +44.0kJ THEN I am given this: mass of pentane= 2.15g ...
August 6, 2006 by Hey!

chemistry
A hexane solution contains as impurities 5.2% (by mass) hepatne and 2.9% (by mass) pentane. Calculate the mass of each component present in 93g of the solution.
April 17, 2011 by Pat

organic chem
Classify as primary, secondary, tertiary alcohols. i. 2-butanol ii. 3-methyl-3-pentanol iii. 2-methyl-1-pentanol iv. 3-chlorocyclohexanol
February 21, 2013 by meghan

Chemistry
Write a balanced equation for the incomplete combustion of gaseous pentane (C5H12) which combines gaseous oxygen to form carbon dioxide, gaseous water and carbon monoxide.
November 6, 2012 by Christine

Organic chemistry
In Hydration of 2-Ethyl-1-Butene which is the major product and which is the minor product? possible products are 3-methyl-3-pentsnol with a bp of 123C and 2-ethyl-1-butanol with a bp of 146C. Thank you!
November 27, 2010 by Mandy

Chemistry
In the case of a small amount of your unknown failed to dissolve in the t-butanol, would it effect the molar mass? = Does molarity increase as molar mass increases?
February 2, 2013 by AhmadM

Organic Chemistry
What is the theoretical volume (at STP) of butene product that can be obtained from the dehydration of 0.412 g of 2-butanol? (MW = 74 g/mol; 22.414 L/mol) A. 125 L B. 1.36 L C. 125 mL D. 0.000248 L Can you please show calculations
March 6, 2009 by nilee

chemistry
Could pentane be successfully separated from hexane by distillation? and could cyclohexane be successfully separated from benzene by distillation? explain?
March 31, 2013 by hex

Chemistry
Pentane gas (C5H12) combusts with oxygen gas (O2) to form water (H2O) and carbon dioxide (CO2). Write a balanced chemical equation for this reaction and explain the scientific principle (statement) that requires the balancing of an equation to make it conform to reality.
March 7, 2012 by Adrian

Chemistry
1. Pentane gas (C5H12) combusts with oxygen gas (O2) to form water (H2O) and carbon dioxide (CO2). Write a balanced chemical equation for this reaction and explain the scientific principle (statement) that requires the balancing of an equation to make it conform to reality
January 15, 2013 by Tyler

Chemistry
A solution contains 10.0 g pentane, C5H12, 10.0 g hexane, C6H14 and 10.0 g benzene, C6H6. What is the mole fraction of hexane? I figured the equation would be: ___ M Hexane x 10 Divided by 30 =Mole fraction of Hexane?
February 10, 2013 by Marcus

organic chem
what should you see when 2-butanol is treated with NaI-I2? if you pour ethylene glycol into water it mixes in all oroprtions. but if you bubble butane, a gas of comparable molar mass through water, it does not mix but just bubbles away. how do you explain these differences?
March 31, 2010 by karlene

chemistry
Suggest a solvent pair for N-Bromosuccinimide using the following solubility data. Solubility of N-Bromosuccinimide (g/100g of solvent) Tert-butanol 0.73 Hexane 0.006 Glacial acetic acid 3.10 Acetone 14.40 Carbon tetrachloride 0.02
October 5, 2011 by Anonymous

Chemistry
Hi there, I have to create a paragraph discussing 1-pentanol, 1-decanol and 1-butanol in regards to the principles of intermolecular bonding. Which one of the molecules have stronger intermolecular forces and why? Could you give me some pointers or tips I'm having difficulty ...
October 12, 2009 by Brandon

chemistry
Which of the following minor products could not arise from the halogenation reaction below? a)2,5 dimethylhexane b)2 bromo-2 methyl propane c)1,3 dibromo, 2 methyl propane d) 2,4 dimethylhexane e)2,2,5 trimethyl pentane plz can someone help me...i kno its not b) or c) but im ...
January 24, 2010 by rafael

Chemistry
The compound butane, has two structures. They have the same molecular formula but different arrangements of bonds in their structures. As a result, they can have different chemical and physical properties. Draw the lewis structures of all the isomers of pentane, C5H12. I am ...
November 16, 2011 by Hannah

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