carnej1 BaltACD dihydrogen monoxide - a killer The more common scientific Name for H2O is Hydrogen Oxide, looks like you're going to have to get re-certified :)....
BaltACD dihydrogen monoxide - a killer
dihydrogen monoxide - a killer
The more common scientific Name for H2O is Hydrogen Oxide, looks like you're going to have to get re-certified :)....
I see you are behind the times.
http://www.dhmo.org/
(While we are on the general subject of 'popular' misunderstanding of chemical danger, does anyone have the actual source for the "we demand a pH of ZERO!" that was attributed to the Naderites in the '70s?)
H2O is two hydrogen and one oxygen. Hydrogen dioxide does not make sense as that would be HO2. Water has been called dihydrogen oxide which is correct, but overkill since water is a so well-known name! H20 is actually called DihydrogenMonoxide (water), not Hydrogen Dioxide.
There's a difference between water and dihydrogen monoxide. Water is H20 but is covalent. Dihydrogen monoxide is ionic. Oxide is O2-, which means it gives two electrons to two hydrogen atoms, then giving 2H+.
Perhaps we all need to be re-certified.
Larry Resident Microferroequinologist (at least at my house) Everyone goes home; Safety begins with you My Opinion. Standard Disclaimers Apply. No Expiration Date Come ride the rails with me! There's one thing about humility - the moment you think you've got it, you've lost it...
RME carnej1 BaltACD dihydrogen monoxide - a killer The more common scientific Name for H2O is Hydrogen Oxide, looks like you're going to have to get re-certified :).... I see you are behind the times. http://www.dhmo.org/ (While we are on the general subject of 'popular' misunderstanding of chemical danger, does anyone have the actual source for the "we demand a pH of ZERO!" that was attributed to the Naderites in the '70s?)
For further detail, ask your computer to search for pH.
Johnny
tree68 Johnny was a chemist's son, but Johnny is no more. For what he thought was H2O was H2SO4...
zardoz Oxide is O2
Wait a minute--isn't O2 oxygen?
I've been accused of having an odd sense of humor. When I worked at a navy computer site, distilled water was used as a coolant for the processors, but we used it also to clean some of the parts in tape drives. I put some in a small squeeze bottle and printed a label for it. I went through the argument in my mind about the use of the "di-" and "mono-" prefixes and decided that H2O was the normal combination, and the prefixes implied something that deviated from the normal. Anyway, to avoid controversy I labelled it "RE-PRECIPITATED OXIDE OF HYDROGEN." The XO saw it during a routine safety inspection and wanted to know why it wasn't in a hazardous material locker.
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"A stranger's just a friend you ain't met yet." --- Dave Gardner
Paul of Covington zardoz Oxide is O2 Wait a minute--isn't O2 oxygen? I've been accused of having an odd sense of humor. When I worked at a navy computer site, distilled water was used as a coolant for the processors, but we used it also to clean some of the parts in tape drives. I put some in a small squeeze bottle and printed a label for it. I went through the argument in my mind about the use of the "di-" and "mono-" prefixes and decided that H2O was the normal combination, and the prefixes implied something that deviated from the normal. Anyway, to avoid controversy I labelled it "RE-PRECIPITATED OXIDE OF HYDROGEN." The XO saw it during a routine safety inspection and wanted to know why it wasn't in a hazardous material locker.
Incidentally, I ran a still the last year and a half that I was in college--with the chemistry professor's approval. No, the product stayed on campus, in the Science Hall.
What's the fun in that??
I looked online on youtube and found multiple videos of people signing petitons to ban Dihydrogen Monooxide from exsistence as they were told it is a Greenhouse gas. So these people most of them college students signed right away. The look in their eyes when they where told what that compound is was priceless.
Shadow the Cats owner I looked online on youtube and found multiple videos of people signing petitons to ban Dihydrogen Monooxide from exsistence as they were told it is a Greenhouse gas. So these people most of them college students signed right away. The look in their eyes when they where told what that compound is was priceless.
Paul of Covington zardoz Wait a minute--isn't O2 oxygen?
zardoz
Not what he said. You got fouled up by the lack of subscript formatting; see the little minus sign? He meant O-double-minus (the valence of free oxygen being -2).
He also forgot or did not mention that the H* associates with one of the H2Os in solution to give the hydronium ion, H3O+, and this is the thing that a solution with a pH of "zero" has ten million more of per mole (molecular weight in grams) than distilled water at pH 7 does.
We can take up the joys of hydrogen bonding if there is interest. My guess is that the situation is otherwise.
RME Paul of Covington zardoz Wait a minute--isn't O2 oxygen? Not what he said. You got fouled up by the lack of subscript formatting; see the little minus sign? He meant O-double-minus (the valence of free oxygen being -2). He also forgot or did not mention that the H* associates with one of the H2Os in solution to give the hydronium ion, H3O+, and this is the thing that a solution with a pH of "zero" has ten million more of per mole (molecular weight in grams) than distilled water at pH 7 does. We can take up the joys of hydrogen bonding if there is interest. My guess is that the situation is otherwise.
I see what you're saying, RME, I did miss the "-".
Now I want to bring up something else in the realm of hair-splitting. Isn't H2O actually the water vapor molecule? It's vague in my old memory, but I seem to remember that liquid water is actually a multiple of 2 and 1. I don't have even a close recollection of what the numbers are, but I'll throw out H16O8 as an example. I'll let someone who knows handle this (or someone who is not as lazy as I am to look it up).
Well, considering that the so-called hydrogen (actually oxygen) bonds between molecules of water are easily broken as the molecules move about until they are cooled to about +3.96 (as I recall) degrees Celcius, it is rather difficult to specify how many individual molecules make up a gross molecule. However, at that temperature the strength of the bonds becomes greater than the kinetic energy that breaks the bonds--and you move towards getting ice as the water temperature reaches 0 Celcius. And, of course the distance between molecules of frozen water is greater than that of liquid water, so ice floats.
Oxygen is the second most electronegative element. Fluorine is the most electronegative element.
Paul of CovingtonI seem to remember that liquid water is actually a multiple of 2 and 1. I don't have even a close recollection of what the numbers are, but I'll throw out H16O8 as an example.
I think you're thinking of that triumph of Russian (pseudo)science 'polywater' (which among other things posited that groups of molecules formed persistent, stable associations in liquid phase). This idea survives, lucratively, in "Penta water" from your friendly neighborhood Whole Foods emporium.
You might also be thinking of different forms of ordered ice, as developed by Percy Bridgman, but here again the molecular composition remains 2H to one O, with the relationships between the molecules as the intermolecular bonding strengthens in the phase change being the difference. Ice-X in particular has the characteristic of a supermolecule of 2H and O, but of course in solid phase under somewhat unusual conditions.
If you think of a water molecule as being a bit like a solid model of Mickey Mouse, with the 'ears' at about 104.5 degrees to each other, you'll recognize that there is a net dipole moment between the positive charge of the two adjacent hydrogens and the "rear end" of the larger oxygen atom they're bonded to. That makes the positive end of one water molecule and the negative end of an adjacent one attract each other ... this is hydrogen bonding in water. There is also van der Waals force due to the inherent dipole moment in the molecule. This page is a good elementary introduction to these, complete with a useful interactive calculator for van der Waals forces up to 100 molecules.
A good thing ice-IX is different from Vonnegut's ice-nine, which is one thing you might get if polywater stabilization were energetically preferred. Shudder.
<shakes head> ... how did we get here from discussing the TSA?
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