Natural Science Forum / Chemistry / General Chemistry / February 2006

I am currently toilet training my cat and need to know when and if she
urinated into the toilet.
Is there any chemical agent I could add to the water that would make
the water turn an obvious color when urine hit it. The chemical would

I'm (still) cleaning up a very old (75 years) all-metal chrome plated
flashlite  and working on the barrel that holds the 5 "D" cells.  It's
chrome plated on the outside, but the inside is beginning to look like
brass (not steel).  Here's the deal, and a dilemma if someone might

Over on the yahoo distillers group
(http://groups.yahoo.com/group/Distillers/) it is common practice to
add sodium bicarbonate to the wash before performing a spirit run so as
to reduce the amount of ethyl acetate that gets distilled over.  We're

I am master degree student in process control. I wish to use dynamic
simulation for control study of distillation.
I am able to converge Steady State model of distillaion in Hysis 3.1.3.
But now when I am switching to dynamic simulation it is asking for

-hi,I'm looking for heats for combustion for styrene,polystyrene,ethyl
benzene,mineral oil,polybutadiene...need it for safety reasons,fire
evaluation...if anyone could help me with information where I can find this
data I would be very greatful,I googeled,but no luck

Is there any semiemperical methods that can include d-orbitals in the
Gaussian03 package?
Tage Øhman

I have to clean gold plated laser reflectors which are coated with
mineral scale.  I believe the scale is composed of copper and aluminum
hydroxides and carbonates.  This is based on the fact that the metals in
the reflector assemblies where the corrosion occurs are aluminum and

A group Wholely dedicated to and for Science graduates.
Here is a group Wholely dedicated to and for Science graduates.
This group offers information on anything and everything related to
Science.

I had made an unsupported statement about a year and a half ago
that cattle required a small amount of arsenic in their diets to
survive.  I was asked for any sort of literature support and
found very little at the time.

i'd like to reduce chloride concentration in my distilled water from 5-30
ppb to less than 1ppb. in this way i could use this water in ionic
chromatography, saving much money. do you know any device that can do this?
i'd like to try with some anionic exchange resin but i don't know ...

I am doing a polymer crosslinking study, and am looking for different
ways to model the data.  After running a catayst comparison matrix,  I
noticed that the results look identical to a titration curve for a
mono-protic acid.  This got me to thinking about what value the point

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   AN EVOLUTIONIST HIDING HIS HEAD IN SHAME
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I need your help and advice on how to measure thermal conductivity of a
gas (i.e. air, nitrogen) with micron sized particles in it flowing
through a pipe at a certain gas velocity or flow rate.  I am quite new
to this and have been looking into possible techniques and theory but I

I am planning to use a hydrogen peroxide solution to sterilize hydroponic
growing pots in my little greenhouse. Old algae and other growth will be
present. Pumping out the solution is a bit of a chore. I am hoping to just
let the H2O2 decompose until I have mostly water.