water properties, general sights and isotopes

Work concerning plumbing or sanitary water (hot, cold, clean or used). Management, access and use of water at home: drilling, pumping, wells, distribution network, treatment, sanitation, rainwater recovery. Recovery, filtration, depollution, storage processes. Repair of water pumps. Manage, use and save water, desalination and desalination, pollution and water ...
User avatar
lau
Grand Econologue
Grand Econologue
posts: 814
Registration: 19/11/05, 01:13
Location: vaucluse




by lau » 23/08/06, 23:34

Andre wrote:Ocean water evaporates with isotopic fractionation: the light isotope of oxygen evaporates in preference to the heavy isotope. Oceans are richer in heavy isotopes than cloud and precipitation water


Sea water is also very different from rain or spring water; is there any feedback from seawater?

I always start my reactor with water pumped from a well that contains more sediment, then rain water, and now tap water with vinegar.


Hi Andrew!

if i can, i'm going to venture for the first time to give you a piece of advice: immediately stop putting vinegar if you don't want to be bored with your pantone afterwards.
I had tried it in May before doing my bubbler again on the advice of bob isat.
Result: it had rotten everything in the copper pipes, the reactor and even after the reactor. Incredible deposits!
Now I put a little acetic acid: a point of knife for 1L of water

Heu..boulon, euros take S until now .. :P
0 x
The number of molecules in a drop of water is equal to the number of drop that contains the Black Sea!
Christophe
Moderator
Moderator
posts: 79124
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10973




by Christophe » 05/08/07, 19:28

One more "curiosity":

Water may be abundant on Earth, but it does keep some secrets. French and German researchers have explained 1 why, under certain conditions, the molecule essential for life transforms into a strange solid resembling glass. The team of Stefan Klotz, researcher in the dense media department of the IMPMC 2 of the CNRS at the Pierre and Marie Curie University in Paris, says that this strange substance called "amorphous" is produced during cooling, "By collapse" of highly pressurized ice!


The following: http://www2.cnrs.fr/presse/journal/2459.htm
0 x
User avatar
elephant
Econologue expert
Econologue expert
posts: 6646
Registration: 28/07/06, 21:25
Location: Charleroi, center of the world ....
x 7




by elephant » 06/08/07, 00:02

Well, it's actually very interesting, but it's not tomorrow the day before we tinker here at the back of our garages! :D
0 x
elephant Supreme Honorary éconologue PCQ ..... I'm too cautious, not rich enough and too lazy to really save the CO2! http://www.caroloo.be
User avatar
camel1
Pantone engine Researcher
Pantone engine Researcher
posts: 322
Registration: 29/01/05, 00:29
Location: Loire
x 1
Contact :

A little mistake ...




by camel1 » 06/08/07, 22:37

Hi Christopher!

Nice synthesis these articles!

However, I was surprised when I read this paragraph:

Structure of the molecule

The hydrogen and oxygen atoms pool their electrons to form a complete layer like that of neon. In fact, the oxygen atom lacks 2 electrons to complete its electron layer, these are the 2 hydrogen atoms which supply it. The H2O molecule formed is stable.

Oxygen: 8 8 protons + neutrons
Hydrogen: 2 (2 * (1 1 neutron proton +))

Total: protons 10 10 balancing loads of electrons.


Well no, the basic hydrogen atom is a proton + an electron (atomic mass 1,00794 u) ... I think you meant 1 proton + 1 electron ...

A proton + a neutron + 2 e- is the helium atom ...

To correct, but it's really serious! : Lol:

A+

Michel
0 x
We were on the brink, but we made a big step forward ...
Christophe
Moderator
Moderator
posts: 79124
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10973




by Christophe » 06/08/07, 23:01

Ah yes it is + 1 electron in fact and it should have been said DiHydrogen on the other hand you have power on:

A proton + a neutron + 2 e- is the helium atom ...


I rather think it's a Deuterium ion (if it exists) right?

Helium has an atomic mass of 4, therefore 2 protons and 2 neutrons.
0 x
User avatar
gegyx
Econologue expert
Econologue expert
posts: 6931
Registration: 21/01/05, 11:59
x 2870




by gegyx » 07/08/07, 11:21

Hydrogen (1H): (atomic number Z = 1 and atomic mass A = 1)
isotopes of hydrogen:
²H: Deuterium: 1 electron and 1 proton + 1neutron (Z = 1 and A = 2)
3H: Tritium: 1 electron and 1proton + 2neutron (Z = 1 and A = 3)

Helium : 2 electrons and 2 protons (Z = 2)
Helium isotopes:
The form: 2 electron and 2 proton (and no neutron), is not known, on earth.
3He: 2 electron and 2 proton + 1neutron (Z = 2 and A = 3)
4He: 2 electron and 2 proton + 2 neutron (Z = 2 and A = 4)
5He: 2 electron and 2 proton + 3 neutron (Z = 2 and A = 5)
6He: 2 electron and 2 proton + 4 neutron (Z = 2 and A = 6)
8He: 2 electron and 2 proton + 6 neutron (Z = 2 and A = 8
---------
Christophe wrote:
A proton + a neutron + 2 e- is the helium atom ...
I rather think it's a Deuterium ion (if it exists) right?

For Deuterium ions:
In order to penetrate to the center of the discharge to deposit their energy there, the particles of the beam must be brought to very high energy. We can reach up to 100 keV with positive deuterium ions, but beyond this limit, the neutralization step becomes very delicate, and we must move on to negative deuterium ions, which are more difficult to create at the level of the ion source but with a much better neutralization efficiency, to reach the MeV necessary for the next generation ITER machine.
The Euratom-CEA Association also has several test benches dedicated to the development of the system for applications on next generation machines, in particular in the field of negative ions.


So there, I say hat engineer!
Stronger than cutting-edge research, on ITER…
0 x
Christophe
Moderator
Moderator
posts: 79124
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10973




by Christophe » 07/08/07, 13:21

Well, we can't all be great gurus, huh : Mrgreen:

Good without laughing, I made it clear:

(if it exists)
0 x
User avatar
stef5555
I understand econologic
I understand econologic
posts: 151
Registration: 15/01/07, 15:20




by stef5555 » 08/08/07, 08:31

[guessing mode ON]

don't answer too quickly : Cheesy:

water becomes solid at what temperature ??

[riddle mode OFF]
0 x
User avatar
gegyx
Econologue expert
Econologue expert
posts: 6931
Registration: 21/01/05, 11:59
x 2870




by gegyx » 08/08/07, 10:31

Detailed answer mode
If it's a riddle to say that the obvious answer is false, simply because it was asked incorrectly, I would answer: rephrase your question correctly (in French, not in P'tit Gris…)
: Mrgreen:

Water is first solid, then liquid, then gaseous, then plasma, then ...
So the question is: at what temperature does water become liquid?
Now the question might ask: at what temperature does the water become solid again? But it also depends on the pressure.
Under normal conditions (purity, container, atmospheric pressure), the temperature must be below 0 ° C, when the water is stationary.
If it is agitated (supercooling), the temperature down to –20 ° C may be necessary.
End of mode
0 x
User avatar
Capt_Maloche
Moderator
Moderator
posts: 4559
Registration: 29/07/06, 11:14
Location: Ile-de-France
x 42




by Capt_Maloche » 08/08/07, 10:41

Christophe wrote:Adding a download:
Synthesis on the molecular organization and theory of clusters of the water molecule.

https://www.econologie.com/les-propriete ... -3146.html


Interressing this article, concerning the T ° of water, the formation of Clusters and the quantity of molecules of water known as "free" which will explain that the performances of an electrolysis are better at 60 ° C than at 20 ° C

Steff:
I know po, I would say that for the water to become solid, it is necessary to have evacuated "the latent energy of solidification of the water" which is of the order of: - 335000 J ´ kg - 1 to q = 0 ° C and at p = 1,013 105 Pa.

it starts at 0 ° C and also depends on the agitation of the water

A funny anecdote: I take out a glass of water that I had frozen to quickly cool it, the water was completely liquid and less fluid than usual, I put the glass on the table and POF all the water contained in the glass instantly solidified, surely reorganized by the shock, the water had already drained all its energy.
0 x
"Consumption is similar to a search consolation, a way to fill a growing existential void. With, the key, a lot of frustration and a little guilt, increasing the environmental awareness." (Gérard Mermet)
OUCH, OUILLE, OUCH, AAHH! ^ _ ^

 


  • Similar topics
    Replies
    views
    Last message

Go back to “Water management, plumbing and sanitation. Pumping, drilling, filtration, wells, recovery ... "

Who is online ?

Users browsing this forum : No registered users and 146 guests