Author Topic: Chemistry Help HERE ONLY !!  (Read 106115 times)

Offline aquarian93

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Re: Chemistry Help HERE ONLY !!
« Reply #255 on: May 29, 2009, 12:19:21 pm »
hey u guys
wat do we need to noe abt "soaps" in organic chem. i dont understand that part
thannkss

Offline aquarian93

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Re: Chemistry Help HERE ONLY !!
« Reply #256 on: May 29, 2009, 12:23:21 pm »
and for the "fractional distillation of crude oil"
do we need to noe da boiling range, chain length and percentage of each fraction?

Offline ZeroZero82

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Re: Chemistry Help HERE ONLY !!
« Reply #257 on: May 29, 2009, 12:27:31 pm »
and for the "fractional distillation of crude oil"
do we need to noe da boiling range, chain length and percentage of each fraction?
I don't think so. But you have to know their uses
It's too late for...Roses.

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Offline asus

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Re: Chemistry Help HERE ONLY !!
« Reply #258 on: May 29, 2009, 12:27:53 pm »
can anybody state the 2 types of isotopes as being radioactive and non-radioactive..

Offline Shogun

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Re: Chemistry Help HERE ONLY !!
« Reply #259 on: May 29, 2009, 12:29:01 pm »
for the fractions u dont have to know thier percentage or stuff, u just have to know which comes first, and what are they used for, and which fraction is which...
one who masters both the pen and paper is indeed a true warrior.

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Offline ZeroZero82

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Re: Chemistry Help HERE ONLY !!
« Reply #260 on: May 29, 2009, 12:39:48 pm »
for the fractions u dont have to know thier percentage or stuff, u just have to know which comes first, and what are they used for, and which fraction is which...
Can you list them in order, with their uses!?  ;D
It's too late for...Roses.

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Offline aquarian93

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Re: Chemistry Help HERE ONLY !!
« Reply #261 on: May 29, 2009, 12:40:21 pm »
and for the "fractional distillation of crude oil"
do we need to noe da boiling range, chain length and percentage of each fraction?
I don't think so. But you have to know their uses

sure? so only uses and the order rite?

thanks!

Offline Shogun

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Re: Chemistry Help HERE ONLY !!
« Reply #262 on: May 29, 2009, 12:43:46 pm »
yup, believe me i spend most of the time i do paper 3 about petroleum industry, i had same problem as u and i did not see any percentage or anything like tht. all i saw iwas they ask u which fraction is which one, and what is the use, and how tht fraction was made(this bcuz of different boiling point).

do +rep me ;D lol (i hate sayin this)
one who masters both the pen and paper is indeed a true warrior.

\m/metal head\m/

Offline ZeroZero82

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Re: Chemistry Help HERE ONLY !!
« Reply #263 on: May 29, 2009, 12:45:13 pm »
and for the "fractional distillation of crude oil"
do we need to noe da boiling range, chain length and percentage of each fraction?
I don't think so. But you have to know their uses

sure? so only uses and the order rite?

thanks!
Yes. Your welcome :D
It's too late for...Roses.

Five finger death punch!

Offline aquarian93

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Re: Chemistry Help HERE ONLY !!
« Reply #264 on: May 29, 2009, 12:47:18 pm »
for the fractions u dont have to know thier percentage or stuff, u just have to know which comes first, and what are they used for, and which fraction is which...
Can you list them in order, with their uses!?  ;D

ill give the order rite now k, the uses ill hv to look at my notes

Petroleum gas
Petrol
Naphita
Paraffin
Diesel
Lubricating Oil
Bitumen

Offline aquarian93

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Re: Chemistry Help HERE ONLY !!
« Reply #265 on: May 29, 2009, 12:50:21 pm »
hey u guys
wat do we need to noe abt "soaps" in organic chem. i dont understand that part
thannkss

can sum1 pls clear my doubt on this?

Offline ZeroZero82

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Re: Chemistry Help HERE ONLY !!
« Reply #266 on: May 29, 2009, 12:50:44 pm »
I don't think thats all of them. What about kerusin(Is the spelling right?:P)?!
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Offline Shogun

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Re: Chemistry Help HERE ONLY !!
« Reply #267 on: May 29, 2009, 12:55:48 pm »
hey u guys
wat do we need to noe abt "soaps" in organic chem. i dont understand that part
thannkss

can sum1 pls clear my doubt on this?

all u need to know about soap is how to make one. which is by reacting fat (oil) with an alkali (like sodium hydoroxide) , the chemical name for soap is sodium sterate.

and about kerosene (the correct spelling,lol) is used as fuel for jet plane with it comes paraffin where both are in the 4rth fraction.
one who masters both the pen and paper is indeed a true warrior.

\m/metal head\m/

Offline ZeroZero82

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Re: Chemistry Help HERE ONLY !!
« Reply #268 on: May 29, 2009, 12:58:31 pm »
Bitumen is for making roads? and which one is for Truck fuel?
It's too late for...Roses.

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Offline IGfab4

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Re: Chemistry Help HERE ONLY !!
« Reply #269 on: May 29, 2009, 01:02:28 pm »
diesel's used for diesel vehicles, kerosene and paraffin for jet engines, fuel oil for ships and for home heating systems. and yes, bitumen is for road surfaces  ;) ;)
« Last Edit: May 29, 2009, 01:10:17 pm by IGfab4 »
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