HDTenEightyP/NetNews huggingface dataset:
From: mgray1@metz.une.edu.au (Matthew GRAY)
Newsgroups: sci.chem
Subject: Re:Questiona about Ammonia
Date: 1 Oct 92 10:44:37 GMT


	Lachlan mentioned the excretion of urea instead of ammonia by
animals, and the excretion of uric acid by birds.
	While this is due partly to toxicity, the major reason for this 
change is solubity and body water balance. On solubility scale, NH3< urea
< uric acid.
If we went around peeing ammonia filled urine, we would be loosing LITRES
of water every day. By excreting urea, we can get a lot more waste N into
the same volume of water.
For birds this is even more crucial; if they had to carry enough water 
to dissolve urea or ammonia instead of uric acid, they wouldn't be able 
to fly. Production of uric acid actually costs energy, but the gains
in reduced water loss must far outweigh this. 
Arid zone animals such as snakes, lizards, goannas etc. also produce
uric acid to help conserve water.
	What all this has to do with toxicity of ammonia gas , I don't
know, but it's pretty interesting just the same.
					Your,
					    s Matthew Gray
					      mgray1@metz.une.oz.au


Newsgroups: sci.chem
From: ivan@erich.triumf.ca (Ivan D. Reid)
Subject: Re: natural and synthetic elem
News-Software: VAX/VMS VNEWS 1.41    
Organization: TRIUMF: Tri-University Meson Facility
Date: Fri, 2 Oct 1992 13:16:00 GMT

In article <1992Oct1.235528.7864@engage.pko.dec.com>,
	 moroney@ramblr.enet.dec.com writes...
>In article <1OCT199209283157@erich.triumf.ca>,
>	 ivan@erich.triumf.ca (Ivan D. Reid) writes...
>>	Not sure I'd classify the neutron as an element.  The lightest true
>>atom is muonium (Mu); with an average lifetime of 2.2 micro-seconds, it's
>>pretty damn unstable too.  You can do some really neat chemistry with it :-).
> 
>But that's just essentially a funny hydrogen isotope, isn't it?
>
	Yeah, that's right.  Chemically it's very similar to hydrogen, except
for the mass.

>BTW, are you talking about a proton + mu-, a mu+ + e-, or mu+ + mu- ?
>What kind of chemistry can you do in 2.2 uS?

	Unfortunately, it's a misnomer; "muonium" should be a mu+ mu- pair
according to the etymologists, but the name was usurped early on to mean
a mu+ nucleus with orbiting e-.  Reaction kinetics are quite nicely done
within the muon lifetime; see e.g. JChemPhys 86, 5578 (1987).  The results
should be describable on the same potential energy surface as H atom reactions
so it gives the theorists quite a challenge.  We also look at radicals -- the
hyperfine couplings are in the region 0-520 MHz which are also readily seen
in the time-scale.  Mu in fullerites is also very interesting -- you get the
MuC60 radical (hfc=325 MHz) plus free Mu which must be existing within the
cage! (See e.g. PhysRevLetts 69, 2005 (1992)).

	BTW, there's also the heavy isotope -- muonic helium (mu- He).  The
orbit of the heavy negative muon puts it very close to the nucleus so it's
essentially a single positive charge being orbited by the electron.  It would
be neat to do a gas-phase reaction kinetics experiment in the same target
with an isotopic mass range of 37:1 just by changing the polarity of all the
beamline magnets.  mu- beamlines are almost intense enough for it these days.

> 
>-Mike

Ivan Reid, Paul Scherrer Institute, CH.     			ivan@cvax.psi.ch
GSX600F, RG250WD.	SI=2.66     "You Porsche. Me pass!"	DoD #484
<Sorry, weird network connections won't let me edit out this crap today.>
From: rickert@cco.caltech.edu (Keith Warren Rickert)
Newsgroups: sci.chem
Subject: Re: H2SO4 + Chlorox???
Date: 3 Oct 92 21:25:47 GMT
Organization: California Institute of Technology, Pasadena
NNTP-Posting-Host: sandman.caltech.edu

Well, I think that mixing hypochlorite and some bases, such as NaOH
is perfectly safe.  In fact, Cl2 dissolves in NaOH to some extent, making 
hypochlorite.  The reaction with ammonia which generates Cl2 is not
a result of ammonia being a base, but is somewhat specific to ammonia, and
I believe involves oxidation of ammonia to hydrazine.
That being said, I am not recommending that anyone mix bleach
with drano in their kitchen, as I dont know whats in drano
well enough to know whether or not it would be safe.
Organization: Stanford Linear Accelerator Center
Date: Monday, 28 Sep 1992 15:53:01 PST
From: <SHERE@SLACVM.SLAC.STANFORD.EDU>
Newsgroups: sci.chem
Subject: Re: natural and synthetic elements
 <BvA2Jw.KH6@alsvid.une.edu.au>

On my periodic table, elements 43 (Technetium), 61 (Promethium)
and 93 on up are color coded red indicating that they are
prepared synthetically.  These are real elements; however, they
have not been found to be naturally occuring on the Earth.
From: whitbeck@equinox.unr.edu (Michael Whitbeck)
Newsgroups: sci.chem
Subject: Re: Rodamine- Chemical Formula
Date: 29 Sep 92 00:36:28 GMT
Organization: University of Nevada, Reno

In article <4544@equinox.unr.edu> whitbeck@equinox.unr.edu (Michael Whitbeck) writes:
:In article <1992Sep22.133445.9680@ux1.cts.eiu.edu> cfthb@ux1.cts.eiu.edu (Howard Black) writes:
::In article <1992Sep21.123914.11054@newstand.syr.edu> masouid@rodan.acs.syr.edu (Ali Souid) writes:
::>
::>Does anybody know the chemical formula of Rodamine?. Could we consider it
::>a conservative substance?.  Thanks.
::
::    I have never heard of it.  Do you mean rhodamine?
::
::    What in the world is a "conservative substance"?
:
:The most remarkable thing about rhodamine, aside
:from its use in dye lasers, is that it ALMOST
:always votes Republican!
:
:(sorry, couldn't resist)

OOOOOOOOPS!

:
:[I could tell you a funny story or two about that!]
:
::
::-- 
::   ******************************************************************
::     Howard Black                             cfthb@ux1.cts.eiu.edu
::     Department of Chemistry                  Eastern Illinois Univ. 
:
:

For the neophytes out there - I must explain that  in article
4544 I was responding to H. Black- his comments, including
signature, are prepended with a ':' as above. 

I really must be more careful- there are some who might think 
I was using Dr.  Blacks sig file! 

[I've been scorched before- though most of us
know how to read these posts and can sort it out from the
" In article <4544@equinox.unr.edu> whitbeck@equinox.unr.edu ... writes:
"  In article <1992Sep22....cfthb@ux1.cts.eiu.edu (Howard Black) writes:
prefixing].

Yours in confusion (here is MY sig file!):

___________________________________________________________
|Mike Whitbeck             | whitbeck@equinox.unr.edu     |
|Desert Research Inst.     | whitbeck@wrc.unr.edu         |
|POB 60220                 |                              |
|RENO, NV 89506            | 702-673-7348                 |
|__________________________|______________________________|

All academics have the potential for being insatiable...
but the chemists are the most expensive and insatiable among the
expensive and insatiable. - J. Martin in "To Rise Above Principle"

Newsgroups: sci.chem
From: billn@hpcvaac.cv.hp.com (bill nelson)
Subject: Re: Smoke bomb
Organization: Hewlett-Packard Company, Corvallis, Oregon USA
Date: Mon, 5 Oct 1992 20:10:51 GMT

dadmun@maple.circa.ufl.edu writes:
: 
: Try using KNO3 + Sucrose in even proportions.  You can get KNO3 at most
: drug stores or plant places.  It is a nitrogen source for plants and it
: is also known as salt peter which is given to sailors or other people
: who should not be sexually aroused.  Anyway, mix the salt and sugar 

The feeding of saltpeter to people to suppress sexual drive is an UL
and is also false.  If a person were given enough to be effective, it
would cause other physical problems. In other words, the effective
dose is close to the toxic dose.

Bill
From: tkhut@ap.cl.msu.edu (Scott Karre)
Newsgroups: sci.chem
Subject: Connecting a Tether to Tetracene -- Any advise?
Date: 5 Oct 92 14:52:43 GMT
Organization: Michigan State University, USA


       Im working on a small organic project in which I must connect a 
12 carbon long chain tether to the end of a tatracene molecule.  Then I
have to place a thiol ending on the chain.  I was told that acylation was 
the best route for connecting the tether, but am unsure as to how I shou;ld
connect the thiol on the end of the chain.  What do you think would be the
best avenue of attack on this synthesis?  I would greatly appreciate any
help!

	Thanks,
	   Kris


	     " That which does not kill us, makes us stronger... "

*******************************************************************************
*  Kris Kortright  ( tkhut@ap.cl.msu.edu or kortrigh@cem.cemvax.msu.edu )     *
*  Research : Laser analytical chemistry under Dr. Gary Blanchard             *
*  Depatment of Chemistry  -  Michigan State University  -  E. Lans. Michigan *
*******************************************************************************
From: whitbeck@equinox.unr.edu (Michael Whitbeck)
Newsgroups: sci.chem
Subject: Re: Rodamine- Chemical Formula
Date: 29 Sep 92 00:09:49 GMT
Organization: University of Nevada, Reno

In article <1992Sep22.133445.9680@ux1.cts.eiu.edu> cfthb@ux1.cts.eiu.edu (Howard Black) writes:
:In article <1992Sep21.123914.11054@newstand.syr.edu> masouid@rodan.acs.syr.edu (Ali Souid) writes:
:>
:>Does anybody know the chemical formula of Rodamine?. Could we consider it
:>a conservative substance?.  Thanks.
:
:    I have never heard of it.  Do you mean rhodamine?
:
:    What in the world is a "conservative substance"?

The most remarkable thing about rhodamine, aside
from its use in dye lasers, is that it ALMOST
always votes Republican!

(sorry, couldn't resist)

Perhaps the originator is referring to it's use as
a groundwater tracer? Geo/Hydro types are prone to
putting dyes, optical brighteners, and lithium
salts down wells.  If they think that the
dye/whatever travels with the water (unretarded)
they say it is a 'conservative tracer'

[I could tell you a funny story or two about that!]

:
:-- 
:   ******************************************************************
:     Howard Black                             cfthb@ux1.cts.eiu.edu
:     Department of Chemistry                  Eastern Illinois Univ. 


Newsgroups: sci.chem
From: johnh@cs.mu.OZ.AU (John Horvath)
Subject: REQUEST: Weather Resistant Adhesive for satellite DISH.
Summary: Brand Names required.
Organization: Computer Science, University of Melbourne, Australia
Date: Wed, 7 Oct 1992 02:49:13 GMT

Hello.

	I was looking for some suggestions on a good weatherproof
	ADHESIVE for attaching aluminium flyscreen mesh to an aluminium
	square tube subframe for a satellite dish I am building.

	Any BRAND NAMES/ADVICE would be greatly appreciated.

Thanks.

John Horvath.

(E-mail: johnh@cs.mu.oz.au)
Newsgroups: sci.chem
From: cfthb@ux1.cts.eiu.edu (Howard Black)
Subject: Re: Connecting a Tether to Tetracene -- Any advise?
Date: Tue, 06 Oct 1992 17:16:13 GMT
Organization: Eastern Illinois University

In article <1992Oct5.145243.2984@msuinfo.cl.msu.edu> tkhut@ap.cl.msu.edu (Scott Karre) writes:
>
>       Im working on a small organic project in which I must connect a 
>12 carbon long chain tether to the end of a tatracene molecule.  Then I
>have to place a thiol ending on the chain.  I was told that acylation was 
>the best route for connecting the tether, but am unsure as to how I shou;ld
>connect the thiol on the end of the chain.  What do you think would be the
>best avenue of attack on this synthesis?  I would greatly appreciate any
>help!

    I'd probably use a terminal alkene and then functionalize its distal
carbon (anti-Markovnikov, that is) with an appropriate nucleofuge, then
knock it off with NaSH.  Of course, you'll have to find appropriate
literature precedent for reaction conditions but, off the top of my head, I
think such a scheme might do it.

-- 
   ******************************************************************
     Howard Black                             cfthb@ux1.cts.eiu.edu
     Department of Chemistry                  Eastern Illinois Univ. 
Xref: sparky sci.chem:3736 sci.bio:3398 sci.bio.technology:261 sci.misc:1644
Organization: Middle East Technical University - Computer Center
Date: Monday, 28 Sep 1992 11:35:02 TUR
From: <C44590@TRMETU.BITNET>
Newsgroups: sci.chem,sci.bio,sci.bio.technology,sci.misc
Subject:    corrosion in water,help|(2)

=========================================================================
my research thesis is about ^ Accelerated Corrosion Tests in  Water containing
Detergents^;i wonder,if anybody,would kindly send me ANYTHING related to this
topic.please send personal e-mail.

thanks in advance
From: whitbeck@equinox.unr.edu (Michael Whitbeck)
Newsgroups: sci.chem
Subject: Re: Metal Amides? Need hydrogen source.
Date: 1 Oct 92 17:26:02 GMT
Organization: University of Nevada, Reno

In article <1992Sep24.170816.11633@ucsu.Colorado.EDU> knapp@spot.Colorado.EDU (David Knapp) writes:
>
>Howdy,
>
>I'm looking for a metal which can absorb ammonia and then release it when 

why a metal? You can find what you want in any RV supply house-
it's called an ammonia absorption refrigerator or 'gas'
refrigerator or '2-'/'3-way'- It uses  absorption of ammonia and
desorption on heating (in place of a compressor). Heating is by
gas flame, 12volt-DC or 110 AC (3-way!)


>heated.  I'm specifically looking for a compound which will maintain a 
>equilibrium of hydrogen at about 30 Torr but I know ammonia will work as
>the hydrogen source.  I would like to adjust the equilibrium pressure in the
>vacuum chamber by changing the temperature of the compound. I would
>prefer a compound which will be able to 'go both ways' but would 
>settle for a one way reaction also.
>
>Hmm, I wonder if palladium would work for this? Can anyone recommend a source 
>for the pressure and temperature dependancies for the solubility of hydrogen
>in palladium?
>

 there is a lot in the open literature, try STN, or CAS (paper)-
 You will even find, I believe, an absorption refrigerator based
 on hydrogen [it is my understanding that this was of interest
 to NASA wrt cooling space suits].


>
>-- 
>David Knapp                                      University of Colorado, Boulder
>Perpetual Student                                   knapp@spot.colorado.edu


let your fingers do the walkin' (through the CAS subject
guide!)
___________________________________________________________
|Mike Whitbeck             | whitbeck@equinox.unr.edu     |
|Desert Research Inst.     | whitbeck@wrc.unr.edu         |
|POB 60220                 |                              |
|RENO, NV 89506            | 702-673-7348                 |
|__________________________|______________________________|

All academics have the potential for being insatiable...
but the chemists are the most expensive and insatiable among the
expensive and insatiable. - J. Martin in "To Rise Above Principle"
From: jrtz@stat1.bst.rochester.edu (John Ritz)
Newsgroups: sci.chem
Subject: Examples of Statistical Experim. Designs ?? Anyone ?
Date: 6 Oct 92 03:19:01 GMT
Organization: University of Rochester - Rochester, New York


 

	Examples of Statistical Experim. Designs ?? Anyone ?

	
	I would be interested in seeing some explicit examples 
        of people using Statistical Experimental Designs : 
        One - and Two - way ANOVA , Randomized Block , 
        Mixed effets , Latin Squares , Factorial etc. , 
        in this area of science. If you have any , please 
        email me at jrtz@stat1.bst.rochester.edu . You 
        can give a reference to a Journaltogether with 
        volume , no. and pagenr. ( e.g. Technometrics , vol.11 ,     
        no.1 .. ) .

        Thx !
From: pk03+@andrew.cmu.edu (Paul Karol)
Newsgroups: sci.chem
Subject: Re: natural and synthetic elem
Date: 2 Oct 92 12:06:04 GMT
Article-I.D.: andrew.Men_igG00UhBE4TW8=
Organization: Chemistry, Carnegie Mellon, Pittsburgh, PA

Concerning Ivan Reid's comments on the legitimacy of muonium being
considered the lightest unstable element, he refers to Halliday &
Resnick's (poor) definition of an atom has having a dense positively
charged nucleus, a definition that would include mu+ but exclude the
positron.  Halliday & Resnick's definition would then exclude
antielements with negatively charged nuclei.  Furthermore, just how
dense is the muon.  'Tain't got no size.

As an aside, I wonder also why the statement was made that the term
"muonium" should have been reserved for the mu+/mu- combination.  The
"...iums" have been used for elements for a long time, and as we all
seem to agree, the atoms of elements have electrons around a nucleus. 
That makes mu+/e- muonium.

Paul J. Karol
Nuclear Chemist
with zero muon content
Newsgroups: sci.chem
From: mlesch@syslab.csd.uwo.ca (Mike Esch)
Subject: Wanted: SCADA info.
Organization: Department of Computer Science, University of Western Ontario, London
Date: Mon, 5 Oct 1992 14:42:39 GMT

Apologies in advance if this is not the right group...


I am trying to locate information on a communications protocol
named SCADA.  The exact wording of the fax is "...requirements
of the C2068 SCADA communications protocol...".

I am posting to this group because I believe it to be a protocol
used by chemical companies for data exchange from the field to
the host computer.

Any information would be greatly appreciated; ftp sites with
the protocol definition would be ideal (I failed to find it
on any of the RFC sites).

Mike
From: aat@dstos3.dsto.gov.au
Newsgroups: sci.chem
Subject: enquiry about poly(vinyl acetate)
Date: 2 Oct 92 15:25:50 GMT
Organization: Defence Science and Technology Organisation


Does anyone know the heat of formation and/or the heat of combustion of
poly(vinyl acetate) (ch3coochch2)n ? .Also for PolyAcetal (CH2O)n

                           Thanks !

              From:
                   Adrian Tudini
                   D.S.T.O.
                   P.O. Box 5108
                   Salisbury South Australia Australia
From: jlangfor@alsvid.une.edu.au (Joseph Langford)
Newsgroups: sci.chem
Subject: Re: natural and synthetic elements
Date: 28 Sep 92 07:38:19 GMT
Organization: University of New England - Northern Rivers (Lismore)

From article <1992Sep16.210436.727@tjhsst.vak12ed.edu>, by jng@tjhsst.vak12ed.edu (Judy Ng):
> Today a science teacher in my school approched me for
> clarification.  One of her students mentioned that a new
> updated periodic table indicated that element no. 43 and 61 are
> man made elements.  I am not awared of any new studies to that
> effect.  Does any one know? Maybe I need to learn something new.
 

I think you will find that your teacher is a just a moron, but I will check
it out.
-- 
Joseph Langford  Internet:  jlangfor@loki.une.edu.au   Phone:  +61 66 ????????
    University of New England, Northern Rivers (Lismore) NSW Australia
Newsgroups: sci.chem
From: pollack@ucunix.san.uc.edu (Steven Pollack)
Subject: Re: Connecting a Tether to Tetracene -- Any advise?
Organization: University of Cincinnati
Date: Tue, 6 Oct 1992 21:11:42 GMT


To create the 12-mercaptododecylaromatic, try acylating with
12-methoxydodecanoic acid, then reduce the ketone via various
(wolf-kishner etc) then BBr3 to convert the MeO to OH or BR than NaSH or
Na2S and Neutralize.  Duck Soup, quack, quack.


_______________________________________________________________________
Steven K. Pollack               |
University of Cincinnati        |
Department of Materials Science |   I notice that you are still
  & Engineering                 |   using polymers!
498 Rhodes Hall  ML#12          |     - Lt. Commander Montgomery Scott
Cincinnati, OH 45221-0012       |       U.S.S. Enterprise
spollack@ester.mse.uc.edu       |
________________________________________________________________________
From: Leland.J.Gershell@dartmouth.edu (Leland J. Gershell)
Newsgroups: sci.chem
Subject: Re: ammonia and iodine?
Date: 7 Oct 92 02:43:54 GMT
Organization: Dartmouth College, Hanover, NH
X-Posted-From: InterNews1.0a5@newshost.dartmouth.edu


When solid iodine crystals are dropped into liquid ammonia, a reaction
occurs
which precipitates a compound known as nitrogen tri-iodide. This
material is not to be taken lightly; it is dangerously explosive and
easily detonated, especially when dry. If you choose to make it, above
all, keep it wet! Very little is required to make it decompose -- I
recall hearing of an instance in which a FLY LANDING ON IT started the
detonation.
Safety first.

-Lee
Newsgroups: sci.chem
From: 890091b@ace.acadiau.ca (HEIDI JILL BURKHOLDER)
Subject: High school chem topics
Keywords: Articles
Organization: Acadia University
Date: Fri, 2 Oct 1992 12:35:15 GMT

	If anyone is interested in writing for Acadian Letters, a 
(non-profit) newsletter by Acadia University's Chemistry Club for the high 
school level, we would welcome your submissions, ideas, suggestions, etc. 
The topics are of your choice - an interesting lab, a cool molecule, your 
favorite chemist (and why), a chemical game, whatever!
	Our object is to entice as many high school students as posssible 
into the field of chemistry by showing them that chemistry is indeed fun and 
interesting, and that ChemNerds are people, too!
	If interested, or would like more information, contact me 
through this newsgroup or at 890091b@ace.acadiau.ca  Thanks!
From: jlangfor@alsvid.une.edu.au (Joseph Langford)
Newsgroups: sci.chem
Subject: Re: Simple Question: Sugar and Salt
Date: 28 Sep 92 07:22:45 GMT
Organization: University of New England - Northern Rivers (Lismore)

From article <1992Sep16.130254.24506@porthos.cc.bellcore.com>, by din@dasher.uucp (Dinesh Nettar):
> In article <sTc7qB1w165w@netlink.cts.com> dimshftr@netlink.cts.com (Adam Tow) writes:
>>        It's been two years since I have taken a chemistry course; I need 
>>some help! :) Say I have a solution of KCl and Sucrose; how would I go 
>>about separating the two from each other? If I had a mixture of the two 
>>(not in solution)? Please reply via e-mail. Thanks...
>>
>Please do not read the folowing garbage due to the impracticality
of the solutions. The easy method is depends on if you want to keep both 
compounds . If KCl can be destroyed then just pass an electric through
a solution of the mixture. If it can't, then a simple solvent extraction
should work.
 
> 1.  You can place the mixture on a sheet of paper in your
>     backyard.  Ants will remove the sucrose and only sucrose
>     for you.
> 2.  Toss the mixture in the air in a 15 m/s wind.
>     KCl being heavier, will travel shorter and fall in a heap
>     nearer than sucrose.
> 3.  Dissolve the mixture in H2O and pass thru an dual ion-exchanger.
>     KCl is made of K+ and Cl- and will remain on the ion-exchanger.
>     Sucrose will remain in solution.
> 4.  Heat the mixture to 600C in a current of O2.  Sucrose will
>     completely burn off into CO2 + H2O, while KCl will remain intact.
> 5.  Dissolve the mixture in H2O and add yeast.  Let stand for
>     10 days.  Sucrose will become C2H5OH and CO2 while KCl will
>     remain unchanged in solution.  Boil to remove C2H5OH.
> 6.  Bubble HCl gas thru a solution of the mixture.  Due to 
>     common ion effect, KCl will precipitate and sucrose won't.
>     (But it will hydrolyze into glucose and fructose.)
> 7.  To a solution of the mixture, add AgNO3.  Now you will have
>     a mess of white AgCl precipitate, and a mixture of KNO3 and
>     sucrose in solution.  Filter.
>     Separate KNO3 and sucrose - but, that is a different problem!
> 8.  Blast the mixture with Gamma Rays for 300 days.
>     Sucrose molecules will tear apart into some unknown fragments and
>     the new molecules will disappear.  KCl will not be changed.
> 9.  Use a molecular sieve to filter out sucrose.
> 10. Pretend that you can't tell the difference.
> 
> Dinesh
> (ex-chemist)
-- 
Joseph Langford  Internet:  jlangfor@loki.une.edu.au   Phone:  +61 66 ????????
    University of New England, Northern Rivers (Lismore) NSW Australia
Newsgroups: sci.chem