I was doing a simple experiment with my class to demonstrate the boiling point of water.Two of the students wanted to see what would happen when we added salt. So, the students added about 50 ml of common table salt to less than 200 ml of boiling water. The temperature of the water immediately...
I've been told (by my high school chemistry teacher, which obviously means it isn't necessarily true), that when salt dissolves in water, that you cannot centrifuge it out.
I understand that you can't centrifuge it out like you would sugar, or something that doesn't ionize, but it seems to me...
quick help!
Hi I need help with two quick questions... thanks in advance...
With the same type of agitation and at the same temperature, why would sugar disolve in water much faster then salt does?
discuss the idea that the standard of living in a society might be measured in units...
For water at 30°C, when 100 g of pure water the vapor pressure is 31.82 mm Hg
and when 50g of NaCl dissolved in 100g of water vapor pressure is 27.68 mm Hg
The vapor pressure of pure water is different than the vapor pressure of water in a salt water solution. Explain why.
Can anyone...
Three Students were asked to find the identity of the metal in a particular sulfate salt. They dissolved a 0.1472-g sample of the salt in water adn treated it with excess barium chloride, resulting in the precipitation of barium sulfate. After teh precipitate had been filtered and dried, it...
Hi,
i have this practical experiment coming up.
i need any help available.
i need to separate sand, salt, water through whatever means necassary.
Thanks in advance.
im confused...
we add rock salt to ice cream to lower freezing point. but how dose that help in making ice cream?
and when we add salt to the snow on the streets in order to melt them, dosent that also lowers the freezing point? dosent that makes the snow harder to melt?
thanks
low composition of sodium in table salt?
today i went to supermarket for buying some food, and i discovered that some salt which is low amount of sodium??how can it be?as i learned from chemistry , the ratio of sodium and chloride is 1 to 1 .
can someone please help me with this problem, its giving me lots of trouble to solve :
(a) Suppose you wanted to make a buffer of exactly ph 7.00 using KH2PO4 and Na2HPO4. If you had a solution of 0.1M KH2PO4, what concentration of Na2HPO4 would you need?
(b)Now assume you wish to make a...
Anybody have any ideas on where I could find some info on this. It is for a comparitive physiology course and I believe our book was written for 3rd graders (Schmit-Neilsen, Knut) so it is not much help.
Our school library is pretty worthless, also.
Thanks
Nautica
Why is salt "bad"?
Why is it that people sometimes must limit their salt intake? After my uncle had a heart attack, he was told to cut back on salt as much as possible. Why?
I'm really fired up about physics now. But I can't puzzle out the following:
Q. When you float in fresh water, the buoyant force that acts on you is equal to your weight. When you float higher in the high-density water of Salt Lake, the B.F. that acts on you is actually:
1) greater than your...
I understand that when you sweat, the water is to cool you and urea is excreted because it's a waste, however I don't know why salt is excreted, nor to I know how electrolytes are used in the process of sweating. Would someone care to enlighten me?
Well i read that Salt Peter is a strong oxydizer (sorry about my english) so i thought that if I mix it with gasoline then i should get more power out from my car. But won't the mixture of gasoline and saltpeter explode in the gas tank?
Hi all,
there's so many forums here, I really don't know if this is the right one. However...
Today, I cooked some noodles.
The water was boiling low, just simmering.
I had a taste, and decided the noodles needed more salt.
So I added some salt.
And, can you believe, where I put in the...
I was reading a book known as the Anarchist's Cookbook recently (surely you've all heard of it) and in it, it mensions a way to make a smoke bomb with household sugar, and something called salt peter... Can anybody please tell me if salt peter is different from normal salt, and where I would be...