Natural Science Forum / Chemistry / General Chemistry / May 2008

The question is like in subject.
I will be very happy if somebody help me.
I am doing separations of amino acids by HPLC with acetate bufer/ACN and
i have a problem when temperature i changing.

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What physical properties of materie lead to the impression of being
"soapy"?
Why is soap/a Alkali metal hydroxide solution soapy?
thanks in advance

Why is the consistence of potassium soaps other than the consistence of
sodium soaps?
What specific physical property is the reason for this (how can the size
difference of the kations result in such a huge property change?)

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something new to you.
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There is an electrolytic method for rust removal based on using baking
soda an a battery. What is the chemical reaction?
Stig Holmquist

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What is the BEST way to know how Islam is going to change your life

Is there any way that someone who is allergic to folic acid can
dilute this acid additive?  This person uses powered milk from Walmart
which has folic acid added as an apparent preservative.  I have read
that soda neutralizes acid, but putting baking soda in milk doesn't

I am trying to compile an excel list of standard chemicals with their
CAS #.  I have been using CAS# search engines but this is going to
take me forever.  Does anyone know if a list like this already exists
on the web? I would imagine this is a fairly common request.

I want to recreate the Stanley Miller Expirement ( for lack of better
name ) and cant find any web sites really giving detailed
descriptions of how to do it. I don't have the aparatus set up yet,
but I can get it made, I can make the sparks, I can get all the

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Can ethylenoxy group C-O-C group form hydrogen bonding with water??
Please give some reference also.

At what rate do human bones dissolve in freshwater and saltwater?
Several years ago I read that some "human" bones had been discovered
in an underwater cave off California.
The bones were 10,000+ years old - so were there since the ice age.

Hi, I am a high school science teacher. I am looking for a dye that
will dissolve in water (to some extent) but them segregate to an
immiscible oil layer. I intend on using this to illustrate
lipophilicity, how the properties of molecules effect their

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