Natural Science Forum / Chemistry / General Chemistry / June 2006

I have one question regarding products that belong to european positive list
for alimentary and potable water applications. How can I find a list of
monomers that can be cured through a step-growth process (polycondensation)
?

i would like to have some information about the changes of mechanicals
propierties for corrosion enviroment on mediums carbon steels

Re: REST mass m_o is, h*fL*Sqrt{1 - (v^2/c^2)} / c^2 ..SI kilograms.
$$                       GR-speak (semantics).
$$             A moving FOOTBALL is still a "football".
$$             A moving RESTmass is still a "RESTmass".

It has been 7 years since I've thought about chemistry and I came
across this problem.  I think that it is a qualitative analysis
problem.  If any can show me how to solve it, I'd greatly appreciate
it.  Here it is:

I am trying to do a reverse stain on a SDS-PAGE by first using .2M
Imidazole and then .3M Zinc Chloride.  I can't get the ZnCl2 to go into
solution.  I have tried heating and even bought a new bottle of ZnCl2.
Any suggestion or help would be greatly appreciated.  Thanks.

Hello all...new to this, please be kind...
I would like to get opinions/suggestions on this:
two benign/non toxic substances/chemicals that need 1-2 hours of
vigorous shaking in order for them to change color...i.e.

If so, what the texture of  such a fatty-acid chain feel like? Would it
be greasy?
Thanks,
Radium

Hello Frineds,
   I have started a new website www.sotsindia.info. It is pertaining
to free chemical database. Please donate information generously. Thanks
Jyot Vakharia

Does anyone know a good way to find amounts of RuBP and Ru5P in a
solution?  I've been trying TLC with a molybdate spray and doing
positive controls, but all I get is a huge blue smear all over the
chromatogram.  Is there any other way to do this?  TIA.

Hi,
I came across something that has me puzzled. My understanding is that
a helium atom has 2 protons and 2 neutrons. I also understand that an
isotope for an element is that element with the same number of protons

Spring 2006 is about to be over, Uncle Al!
Any news on your diamond synthesis experiments you would like to
share...?!
KAC

Sorry for the re-post
luca...@sbcglobal.net wrote:

Can you tell me:-
1. Can atoms or molecules/compounds store informations of their
previous interactions with different energies and other
atoms/molecules/compounds without chemical reaction or without change

I want to know how different type of energies(temperature, magnetic
fields, sound and light, vibrations etc.) can effect/impact the
structures of solids?
Can it expand their volume?

100.0 ml of 0.100 M acetic acid is placed in a flask and  is titrated
with 0.100 M sodium hydroxide . An appropriate indicator is used.  Ka
for acetic acid is 1.7 x 10^-5Calculate the pH in the flask at the
following points in the titration.