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05-27-2008, 02:52 PM
| | Registered User | | Join Date: Apr 2006 Location: St. John's, NL | | | Chemistry, quick question.
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for n-octane, the condensed formula would be:
CH3 (CH2)6 CH3 ?
or would nit actually be wrote out with c and then the 2 h's around it and so on?
i already did the line and structural for it.
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Originally Posted by MilkyMcMilkMilk  i've seen cats in my neighborhood being brutally raped, it seems to be becoming some sort of epidemic. | |
05-27-2008, 03:06 PM
| | Registered User | | Join Date: Jan 2000 Location: Finland, EU | | | Looks correct.
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"..one day when someone comes up to you asking for advice you realize that it's never been the equipment at all." - Ken Rockwell, photographer
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05-27-2008, 03:29 PM
| | Registered User | | Join Date: Apr 2006 Location: St. John's, NL | | | thanks man, just making sure with that one because it was the simplest one i could find.
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The Original King of Stupidity; Quote:
Originally Posted by MilkyMcMilkMilk i've seen cats in my neighborhood being brutally raped, it seems to be becoming some sort of epidemic. | |
05-27-2008, 04:08 PM
|  | The Lowdown Diggler | | Join Date: Apr 2006 Location: Huntington Beach, CA | | Are you texting this in during a test?  |
05-27-2008, 04:11 PM
| | Registered User | | Join Date: Apr 2006 Location: St. John's, NL | | | no im working om some homework maki, why does it seem that way?
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The Original King of Stupidity; Quote:
Originally Posted by MilkyMcMilkMilk i've seen cats in my neighborhood being brutally raped, it seems to be becoming some sort of epidemic. | |
05-27-2008, 04:59 PM
| | Registered User | | Join Date: Apr 2006 Location: St. John's, NL | | | another quick one
how can u tell which one is more soluble in hexane, CH3(CH2)2OCH2CH3 or CH3(CH2)2COCH2CH3
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The Original King of Stupidity; Quote:
Originally Posted by MilkyMcMilkMilk i've seen cats in my neighborhood being brutally raped, it seems to be becoming some sort of epidemic. | |
05-27-2008, 05:05 PM
| | Registered User | | Join Date: Dec 2005 Location: Millcreek Township, UT | | | Organic polarity:
Amide > Acid > Alcohol > Ketone ~ Aldehyde > Amine > Ester > Ether > Alkane
Ethers are generally less polar than esters, so an ether of similar MW will most likely be more soluble in hexane.
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05-27-2008, 05:16 PM
| | Registered User | | Join Date: Apr 2006 Location: St. John's, NL | | | so what your saying there is that the alkane is the most soluble in hexane out of that?
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The Original King of Stupidity; Quote:
Originally Posted by MilkyMcMilkMilk i've seen cats in my neighborhood being brutally raped, it seems to be becoming some sort of epidemic. | |
05-27-2008, 05:38 PM
| | Registered User | | Join Date: Jan 2007 Location: On The Bayou | | Quote:
Originally Posted by Fontaine for n-octane, the condensed formula would be:
CH3 (CH2)6 CH3 ?
or would nit actually be wrote out with c and then the 2 h's around it and so on?
i already did the line and structural for it. | CH 3CH 2CH 2CH 2CH 2CH 2CH 2CH 3 |
05-27-2008, 05:40 PM
| | Registered User | | Join Date: Apr 2006 Location: St. John's, NL | | Quote:
Originally Posted by peterbright CH3CH2CH2CH2CH2CH2CH2CH3 | my way is easier  
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The Original King of Stupidity; Quote:
Originally Posted by MilkyMcMilkMilk i've seen cats in my neighborhood being brutally raped, it seems to be becoming some sort of epidemic. | |
05-27-2008, 06:09 PM
|  | I'm a tumbler, born under punches | | Join Date: Aug 2006 Location: Northern California | | | Atoz has it right on. The easy way to remember it is that like dissolves like. Hexane is non-polar so the more non-polar a substance is the better it will dissolve in it. |
05-27-2008, 10:17 PM
| | Registered User | | Join Date: Nov 2007 Location: Montreal, Quebec, Canada | | Quote:
Originally Posted by Fontaine another quick one
how can u tell which one is more soluble in hexane, CH3(CH2)2OCH2CH3 or CH3(CH2)2COCH2CH3 | first one, less polar, hexane isn't polar
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05-27-2008, 10:18 PM
| | Registered User | | Join Date: Nov 2007 Location: Montreal, Quebec, Canada | | Quote:
Originally Posted by Fontaine for n-octane, the condensed formula would be:
CH3 (CH2)6 CH3 ?
or would nit actually be wrote out with c and then the 2 h's around it and so on?
i already did the line and structural for it. | it actually
H 3C (CH 2) 6 CH 3
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Originally Posted by Jim Campbell grand daddy used to say that the more he learned about people the better he liked horses | |
05-28-2008, 12:00 AM
| | Registered User | | Join Date: Dec 2005 Location: Millcreek Township, UT | | Quote:
Originally Posted by Fontaine so what your saying there is that the alkane is the most soluble in hexane out of that? | Yes, since hexane is an alkane itself. "Like dissolves like," as was stated above.
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Originally Posted by Kwesi Atoz, forever the inside spoon. | Rickenbacker #19, Mediocre Bassist #3, Mark Wilson Fail #Onion
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05-28-2008, 03:05 AM
| | Registered User | | Join Date: Jan 2000 Location: Finland, EU | | | I recall my organic chemistry correctly, the second one has the oxygen bound to a single carbon, which would make a double bond to oxygen, hence making the molecule a ketone. Having the a highly electronegative oxygen atom sticking out from the molecule makes it more polar than the ester, so it dissolves less into non-polar molecules like octane.
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"..one day when someone comes up to you asking for advice you realize that it's never been the equipment at all." - Ken Rockwell, photographer
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05-28-2008, 03:32 AM
| | Registered User | | Join Date: Jun 2006 Location: the Netherlands, Amsterdam | | | thank god they didn't ask this question on my exam chemistry last friday... |
05-28-2008, 04:54 AM
| | Registered User | | Join Date: Apr 2006 Location: St. John's, NL | | Quote:
Originally Posted by Muusers thank god they didn't ask this question on my exam chemistry last friday... | this is only my introduction course 
but i have done 4-5 other chemistry courses....the course of the petroleum!
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The Original King of Stupidity; Quote:
Originally Posted by MilkyMcMilkMilk i've seen cats in my neighborhood being brutally raped, it seems to be becoming some sort of epidemic. | |
05-28-2008, 06:12 AM
| | Registered User | | Join Date: Apr 2008 Location: Atlanta | | | i'm so glad i went for computers...
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