2007-02-20 17:08:28 · 4 answers · asked by maggie m 1 in Science & Mathematics ➔ Chemistry
it is one-twelth of the weight of C-12 atom.
1 a.m.u = 1.66 * 10^(-24) grams
it is used to express the mass of atoms and molecules.
2007-02-20 17:43:02 · answer #1 · answered by Anonymous · 0⤊ 0⤋
An atomic mass unit is the mass of a hydrogen atom; 1 proton + 1 electron. Google it. That is, ordinary H, not a mix of H, deuterium and tritium. In your chem. textbooks, the atomic weight of H is listed as 1.008. The reason it isn't exactly 1 is because there's about 1 part in 5000 of deuterium in the H on Earth that we use, to make it a little bit heavier.
2007-02-20 17:25:08 · answer #2 · answered by zee_prime 6 · 0⤊ 0⤋
amu itself represent the weight of the element.It is"atomic mass unit".Usually it is given in grams.
2007-02-20 17:26:44 · answer #3 · answered by jasmine g 1 · 0⤊ 0⤋
1.66 x 10 ^ -24 grams.
(0.00000000000000000000000166)
2007-02-20 17:11:13 · answer #4 · answered by Anonymous · 1⤊ 0⤋