Tetanus vaccine can help prevent tetanus disease, commonly known as lockjaw.. Tetanus is a serious disease that causes painful tightening of the muscles, usually all over the body. It can lead to locking of the jaw so the person cannot open his mouth or swallow. Tetanus leads to death in about one in ten cases.
The most abundant dissolved salt in ocean water is sodium chloride. It is a colorless crystalline compound with the chemical formula of NaCl.
For example, the. average concentration of chloride in sea water. is 18.98%. In fact, it is the most abundant. negative ion (anion) in the ocean, constituting. nearly 90% of the anions found in sea water. Chlorine, by comparison, is found mainly in the. earthâs crust, where it constitutes approximately. 0.045% of the crust.