Natural Science Forum / Chemistry / General Chemistry / June 2005

Is this prof just trying to trick people?
Here is another one that I found with incomplete info.  Am I out of my
mind? Or just somebody's dupe?
15. You are given 10.00 grams of a mixture of FeO and Fe2O3. Complete

Why acrylate has overcome with nitrocellulose among top coatings
during the last ten years?

Does anybody know the suppliers of carbon coated glasswares. Please
answer my query. Thanking you.
Deepa

I'm really lazy. Could some energetic person please do a calculation for me.
... The half life of a neutron at rest is about 15 minutes after which it
decays into a proton and an electron. That's why neutrons are prefered for
the catalysis of nuclear reactions. ... Suppose you had a ...

I have some problems with crystallization of thermal phosphoric acid
85%. I know that it is a situation that can occur at temperatures
lower than 21ºC.  I put it in drums of 25 liters and after two days,
they developes one or two centimetres of crystallized product at the

Does anyone know if there is a binary azeotropic calculator online where
I can either enter the chemical names or the data on a chemical, such as
the boiling point, vapor pressure, molecular weight and so forth and it
will give me an estimate of the boiling point and expected ...

What is the purpose of adding sodium chloride to a caffeine solution
after suction filtration and just before extraction with chloroform in
a separatory funnel? I would be greatful for a reply.

Hi guys. What's the purpose of adding sodium carbonate to a hot,
aqueous solution of caffeine? I think I have an idea, but I need to
make sure.

Is anybody familiar with any potassium silico phosphate similar to
calcium silico phosphates?
Searching Ceramic Phase Diagrams I could fine none and very little
info about the three component system K2O-SiO2-P2O5.

When I polish electroless nickel, I use either a diamond slurry in
mineral oil or  aluminum oxide slurry in water.  After polishing with
diamond and producing a mirror finish, I clean with a soap solution.
However, even after using the soap, the surface is then hydrophobic,

We painted our newly cleaned 45-yr-old concrete floor with the Kemiko
Rembrandt polymer stain and it is still tacky 2 days later!  Is there
any hope for it to eventually dry?  Any ideas of a clear surface
application that will harden it enough to move furniture back?  HELP!!!

Does anybody know where i can get some chem. equipment, ie beakers,
distillation columns, etc, for a good price in australia from a company
who sells to anyone?
thanks.

I wonder this what would happen if
aluminum chloride and diethyl ether was stirred at room temperature.
I also will heat the products of this reaction to 800 degrees of
celcius.

Can any body give me a manufacturing process of tartaric acid...
with
characteristics uses in textile processing industry..
thanks in advance

I am not a chemist so I hope you people can advise me.
Apart from impurities, does isopropyl alcohol leave any residue after
it has evaporated?
Also, does ethyl alcohol leave any residue?