The atomic mass number (or isotope number) = number of protons + neutrons combined so in the case of calcium 40 = 20 + number of neutrons. This makes the number of neutrons 20. Added: Other isotopes (about 3%) of (natural occurring) Calcium are with 22, 23, 24, 26 or 28 neutrons.
Off the Atlantic coast of the United States tiger sharks are found from Cape Cod, Massachusetts, to the Gulf of Mexico and Caribbean Sea.Off the Pacific coast tiger sharks are found from southern California southward. In the western central Pacific, tiger sharks are found in the Hawaiian, Solomon, and Marshall Islands.istribution: Off the Atlantic coast of the United States tiger sharks are found from Cape Cod, Massachusetts, to the Gulf of Mexico and Caribbean Sea. Off the Pacific coast tiger sharks are found from southern California southward.
Bar-bellied seasnakes are common. in nearshore habitats of shark bay. There are at least six sea snakes that are found in Shark Bay, but the most common in our study area are the bar-bellied sea snake (Hydrophis elegans) and the olive-headed sea snake (Disteria major). Sea snakes are common prey for tiger sharks in Shark Bay despite being among the most venomous snakes on earth.