•Why is ocean water salty?
–Salts eroded from the crust of millions of years.
–Most common form is NaCl.
•Na+ bonds with Cl-.
–Other salts: Mg, S, Ca, K, Br.
–Typical seawater is ~35ppt.
•How much salt is in the ocean?
–If dried and spread evenly, it would cover the world at a depth of 500ft.