NYC's tap water is cleaner than some bottled water.
Actually, most.
Long Island's tap water blows balls though.
Actually, most.
Long Island's tap water blows balls though.
F- replacing H+? Or is it H-? Odd charge balance, but I suppose possible, I must research this!Vub wrote:
Yes, sorry, 10^-60. With the F and H thing, I actually meant it displaces an H atom part of calcium hypaxate, but yes, go chemistry!S.Lythberg wrote:
do you mean 10^-60?Vub wrote:
Your teeth (dentine and enamel) are made up of something called calcium hypaxate (something like that) which has a solubility constant of the magnitude 10^50, which means it is very hard to dissolve, however when exposed to acidic environments, it becomes much easier. When fluoride is added to the water, the F atom displaces an H atom and increases the solubility constant to the order of 10^60, which means your teeth are now 10 billion times harder to dissolve.
I believe that constitutes insoluble in chemical terms, But your correct that F- and H+ react to form HF (Hydroflouric acid), which is much less soluble than pure H+ ions. (ironically, HF can also etch glass in high concentrations, so keep an eye on your dishes)
My one concern would be Flourine's tendency to attack carbon-hydrogen bonds, which make up the majority of your body (but i believe that the concentration in water is <.002%, so probably not much happening)
It is my field after all...
you might have given me a topic for my Biochemistry class
You mean that guardia/cryptosporidium outbreak of 1998 or something? That was due to heavy rainfall and run-off into the dams, it's no longer contaminated! Say, how's the drought over there? Warragamba is up to 60% capacity now, up from 37% not a while back!some_random_panda wrote:
How dare you, ya Victorian!Cheez wrote:
Melbourne's water is pretty bad (like drinking pool cleaner), I would hate to think that statement were true.some_random_panda wrote:
It's good, but of course too much of anything will stuff you up. This is one reason that toothpastes tell you not to swallow the foam.
Is there more flouride in tap water in the US than Australia? I think I read that somewhere.
Edit: Sydney on the other hand...
Or are you saying Sydney's is worse? Remember, they had the contamination in their water not too long ago, and the water had to be boiled. Melbourne's water is actually pretty good. If you don't believe me, go to Ballarat/Bendigo. If things haven't changed, they don't even remove all the chlorine in it! Now that's pool cleaner.
F- displacing H-, haha, I did this in first year chemistry, so they could be spoonfeeding us lies Which uni are you in mate? And what year are you?S.Lythberg wrote:
F- replacing H+? Or is it H-? Odd charge balance, but I suppose possible, I must research this!Vub wrote:
Yes, sorry, 10^-60. With the F and H thing, I actually meant it displaces an H atom part of calcium hypaxate, but yes, go chemistry!S.Lythberg wrote:
do you mean 10^-60?
I believe that constitutes insoluble in chemical terms, But your correct that F- and H+ react to form HF (Hydroflouric acid), which is much less soluble than pure H+ ions. (ironically, HF can also etch glass in high concentrations, so keep an eye on your dishes)
My one concern would be Flourine's tendency to attack carbon-hydrogen bonds, which make up the majority of your body (but i believe that the concentration in water is <.002%, so probably not much happening)
It is my field after all...
you might have given me a topic for my Biochemistry class
University of Illinois, Chemical EngineeringVub wrote:
F- displacing H-, haha, I did this in first year chemistry, so they could be spoonfeeding us lies Which uni are you in mate? And what year are you?S.Lythberg wrote:
F- replacing H+? Or is it H-? Odd charge balance, but I suppose possible, I must research this!Vub wrote:
Yes, sorry, 10^-60. With the F and H thing, I actually meant it displaces an H atom part of calcium hypaxate, but yes, go chemistry!
It is my field after all...
you might have given me a topic for my Biochemistry class
I'm a lowly freshman (1st year), but all sophomore level classes...
I'm gonna venture a guess at the University of Illinois.Vub wrote:
F- displacing H-, haha, I did this in first year chemistry, so they could be spoonfeeding us lies Which uni are you in mate? And what year are you?S.Lythberg wrote:
F- replacing H+? Or is it H-? Odd charge balance, but I suppose possible, I must research this!Vub wrote:
Yes, sorry, 10^-60. With the F and H thing, I actually meant it displaces an H atom part of calcium hypaxate, but yes, go chemistry!
It is my field after all...
you might have given me a topic for my Biochemistry class
EDIT: Fuck my slow posting.
Last edited by cowami (2008-01-24 14:41:05)
Awesome, I was thinking of transfering to chemical engineering, can you tell me abit about it, like why did you do it etc.S.Lythberg wrote:
University of Illinois, Chemical EngineeringVub wrote:
F- displacing H-, haha, I did this in first year chemistry, so they could be spoonfeeding us lies Which uni are you in mate? And what year are you?S.Lythberg wrote:
F- replacing H+? Or is it H-? Odd charge balance, but I suppose possible, I must research this!
It is my field after all...
you might have given me a topic for my Biochemistry class
I'm a lowly freshman (1st year), but all sophomore level classes...
No idea. I bet in Queensland they've got more water than you.Vub wrote:
You mean that guardia/cryptosporidium outbreak of 1998 or something? That was due to heavy rainfall and run-off into the dams, it's no longer contaminated! Say, how's the drought over there? Warragamba is up to 60% capacity now, up from 37% not a while back!some_random_panda wrote:
How dare you, ya Victorian!Cheez wrote:
Melbourne's water is pretty bad (like drinking pool cleaner), I would hate to think that statement were true.
Edit: Sydney on the other hand...
Or are you saying Sydney's is worse? Remember, they had the contamination in their water not too long ago, and the water had to be boiled. Melbourne's water is actually pretty good. If you don't believe me, go to Ballarat/Bendigo. If things haven't changed, they don't even remove all the chlorine in it! Now that's pool cleaner.
Why did my dentist say water killed flouride? Fu*king lying b*tch