CAlculate the atomic mass for each of the following elements assuming that each consists of the isotopic mixture shown. Show all work on separate paper.
H: 99.985% 1^H; 0.015% 2^H
the 1^H part, i don't know how to type it, the 1 is small and goes to the top left of the H, same goes with 2^H
Can someone please tell me how to do this, cause i really don't understand it., thanks
2007-09-25 09:18:02 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
(99.985 x 1) + (0.015 x 2)/100
2007-09-25 09:25:24 · answer #1 · answered by Gervald F 7 · 0⤊ 0⤋
All elelemts of a particular kind have the same number of protons; however not all have the same numbers of neutrons. If the neutrons vary in number, then this means isotopes are present.
Hydrogen has three isotopes, based on the number of neutrons. Ordinary hydrogen has 1 proton and no neutrons. It is probably what comprises 99.985 % of all hydrogen. The first isotope has 1 neutron and is called deuterium. It is what "heavy water" is made from. The third isotope has two neutrons and is called tritium. Tritium was used in the first atomic bomb. As the number of neutrons increases, atoms generally become less stable. My guess is the "2" hydrogen is deuterium, meaning tritium does not occur naturally.
2007-09-25 16:30:42 · answer #2 · answered by Roger S 7 · 0⤊ 0⤋