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Author Topic: CHEM AND BIO HELP AND TIPS HERE  (Read 333268 times)

Offline Vin

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #750 on: May 15, 2010, 07:20:40 pm »
Quote from: princess12 on May 15, 2010, 07:18:05 pm
interpert simple chromatograms including the use R values
   ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ???
urgently please fast

i had a presentation on it .. wait lemme check ..
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Offline soraam

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #751 on: May 15, 2010, 07:24:03 pm »
chromatography is when you put some spots on a line made of pencil -because ink dissolves-  in a solvent where it spins and gives spots
the rf value is to see the distance moved by a spot by the distance moved by the solvent and each substance has a particular rf value so you can identify the substance by it
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Offline Vin

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #752 on: May 15, 2010, 07:25:33 pm »
HERE YOU GO .. ;)

enjoy .. :)
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Offline rahuldevnani93

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #753 on: May 15, 2010, 07:26:01 pm »
Need chemistry paper 6 may june 2001 urgent !!

Email to thunder.rahul@hotmail.com
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Offline princess12

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #754 on: May 15, 2010, 07:28:39 pm »
thanx
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Offline princess12

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #755 on: May 15, 2010, 07:32:38 pm »
go and check in the
                         http://www.xtremepapers.net/
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Offline sarasa

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #756 on: May 15, 2010, 07:40:29 pm »
Nid, in meiosis, does duplication take place first or halving?
Thanks in advance
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Offline Vin

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #757 on: May 15, 2010, 07:47:52 pm »
there are other people on this forum as well .. =P =P  jus jokin .. ;)

http://www.youtube.com/watch?v=D1_-mQS_FZ0

halving .. ;) want it detailed ??
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Offline CatAly$t

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #758 on: May 15, 2010, 07:57:31 pm »
can somebody tell me what is the purpose of thermal decomposition??
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Offline CatAly$t

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #759 on: May 15, 2010, 08:00:34 pm »
Quote from: Mathewness on May 15, 2010, 07:17:06 pm
Have you got the question right...?
I think you mean why is it more efficient to eat the green plant than the animal, in which case answer would be that less energy is wasted by eating the plant than eating the animal..

i copied this from the syllabus...yes i got it right..u can check the syllabus section IV...

thats y i dont understand it...
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Offline Vin

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #760 on: May 15, 2010, 08:01:10 pm »
to decompose compounds which might be useful as elements or in simpler forms .. y do u ask ?
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Offline CatAly$t

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #761 on: May 15, 2010, 08:01:56 pm »
Quote from: ~VIN1094~ on May 15, 2010, 07:19:28 pm
it means that why there is an advantage in feeding on green plants directly rather than having animals fed (e.g. feeding maize to a cow)  and consuming them

ans. less energy lost when plants directly consumed .. =)

thanks!now i understand... :D
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Offline Vin

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #762 on: May 15, 2010, 08:02:12 pm »
Quote from: CatAly$t on May 15, 2010, 08:00:34 pm
i copied this from the syllabus...yes i got it right..u can check the syllabus section IV...

thats y i dont understand it...

but u got it know right .. check my post on the previous page ;)
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Offline Vin

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #763 on: May 15, 2010, 08:02:30 pm »
Quote from: CatAly$t on May 15, 2010, 08:01:56 pm
thanks!now i understand... :D

ok sure .. ;)
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Offline CatAly$t

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #764 on: May 15, 2010, 08:03:04 pm »
Quote from: ~VIN1094~ on May 15, 2010, 08:02:12 pm
but u got it know right .. check my post on the previous page ;)

yeah,

 thanks....
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