Natural Science Forum / Chemistry / General Chemistry / December 2005

who can tell me about a complicacies and problems of  cooling tower
simulation?

Hello! I meet a problem when I am funishing my calculation chemistry
homework. The homework     ark me to make a program calculation the
number of isomers of R-OH (saturated alkyl alcohol),giving the number
of carbon atoms from 1 to 100. Already I have programmed one, but I

I am no chemistry guy. But I was assigned a job recently which related
to General Chemistry- the beer's law.
I read the documents left by a previous employee of the company
On which I see the following equations

I have some enameled lettering painted onto a cardboard background.
Unfortunately, due to the nature of the enameled paint, I actually need to
be able to recycle the paint for another use.  Question:  How can I remove
the paint and dissolve it without dissolving the cardboard also?  ...

So the title says it all. I'm a high school student and I have to write
a 4-5 page essay on this law for my chemistry class. I've searched
google and couldn't find anything, except short definitions of the law.
So can anyone give some information about the law or set up a outline

hi everyone
               i wonder sometimes  what could be the future of
biochemistry. how is it going to survive the future.do we need
computerisation of biochemistry.

Does anybody know other (simple) methods of determining the point of
zero charge (the point at which the net charge on surface is zero) of
adsorbent. I tried to repeat the procedure below with my adsorbent
(carbonized corncobs), yet what I observed that the trend is that the

  I'm Robert, I'm a newbie to the world of chemistry and to this
newsgroup.  I recently decided to start a new hobby in chemistry.  I
always liked chemistry at school and almost became a chemist once, only
if I did not fail my science courses.  I wasn't very good a school in

Sorry for not replying to that other thread, but thanks for your responses.
So I've done the questions. I'll post the question first then the "answer:"
The question was to balance the charges etc.
1) (S2O3)2-  + I2           ---> (S4O6)2-   + (I)-

We have an experiment that is based on calibration of 10 mL volumetric
and serological pipettes by measuring the mass and density of water. We
give the students class "A" pipettes to be calibrated and ask them to
ascertain whether they conform to the (former) NBS definition of class

I would like the answers to these questions please. I've been given a sheet
to do for practise, and since I've no idea what the REAL answers are, I
can't check my understanding/working out, so it's a bit useless without the
answers as I won't know where I've gone wrong.

A interesting demo, very rapid and extremely voluminous:
http://www.collegedowntime.com/media/movies.php?title=coolvideomagicfoaminchemis
tryclass
I assume larger cylinder is organic liquid and the smaller is some type
of initiator.  As for the organic liquid, I would think any type ...

Hello to everybody.
I am a holographist and I make my own holographic emulsions.  I'm
always looking tor increase sensitivity and reduce exposure time to
avoid failures caused by movements of the film or object.

I want to remove ethanol from wine by heating it.
How long and at what temperature should I heat it?
Is there a test which can be used to determine how much ethanol remains?

Could you specialists kindly assist me.
I have a household descaler product which is described as containing
"15 to 30 percent" citric acid.
What range of pH values would this be?