Does anyone know how salty sea water is? Also, if i was to make up my own solution, how much salt would i need to add to what volume of water?

 

Thanks for your help guys.

about 35 grams per litre of water should be just fine

excellent, thanks very much YT!

of course if you wanted to synthesize you're own seawater, you'd need more then just NaCl.

 

Here's a list of major constituents (scroll down a bit) http://plaza.ufl.edu/mrosenme/Seawater_Chemistry.htm

easier than that would be to go to a pet shop where they sell marine fish and get the salts from there (it`s pre-mixed), no guesswork involved then, but she probably already knows about that

or you could drive to the sea with a bucket like i do.

I just assumed she lived too far from the ocean to get the water, or else that would be the obvious solution.

 

The great thing about sea water it that all it's constituents are in constant proportions, so no matter how much water you have, you can tell the concentration of all the components from knowing the concentration of one component.