What is the mass in an atom?
2007-07-19 05:39:38 · 10 answers · asked by fha_chafzeto 2 in Science & Mathematics ➔ Physics
Depends that atom you're looking at...
The mass of an atom is the sum of the masses of the protons, neutrons and electrons:
Proton mass: 1.673 x 10^-27kg
Neutron mass: 1.675 x 10^-26kg
Electron mass: 9.109 x 10^-31kg
Or you can just look on a periodic table and take down the atomic mass of the atom of element you are looking at. Since it is relative you'll have to use a formula (m =mu/NA) to convert it into g. (m = mass in grams, mu = mass in atomic mass units, NA = Avagadro's number: 6.02 x 10^-23)
2007-07-19 05:45:13 · answer #1 · answered by Tsumego 5 · 0⤊ 0⤋
Hey there!
The mass of an atom is the sum of the masses of protons, neutrons and electrons. The typical unit for measuring the mass of an atom is known as atomic mass unit or amu.
1 amu is equivalent to about 1.66053886 × 10^-27 kilograms.
The unit, amu, is really important, especially finding the mole of a substance.
The mole is number of atoms of a particular element that measures 1 gram.
In order to calculate the mole, multiply the mass of the atom in an element with Avogadro's number.
Avogadro's number is equal to 6.0221415×10^23.
Hope it helps!
2007-07-19 06:43:29 · answer #2 · answered by ? 6 · 1⤊ 0⤋
it depends on the atom. The mass of an atom is defined by the atomic mass and this varies between elements and isotopes. It is the sum of the masses of the protons and neutrons in the nucleus. The electron mass is too small to matter. it is about 10,000 times smaller than a neutron or proton.
2007-07-19 05:44:31 · answer #3 · answered by throbbin 3 · 0⤊ 0⤋
Mass of the atom is the sum of the masses of the neutrons, protons and electrons. Protons and neutrons are about 1800 times more massive than an electron.
2007-07-19 05:45:08 · answer #4 · answered by nyphdinmd 7 · 0⤊ 0⤋
Mass of an atom represents equivalent energy of the atom divided by square of the velocity of light in vacuum.
2007-07-19 06:45:01 · answer #5 · answered by suntan_us 1 · 0⤊ 0⤋
The mass of its protons, neutrons, and electrons.
A single proton typically outweigh an electron.
2007-07-19 05:43:09 · answer #6 · answered by Anonymous · 0⤊ 0⤋
atomic weight
2007-07-19 05:43:19 · answer #7 · answered by Inspector Gadget 2 · 0⤊ 0⤋
Isotopes
2016-05-17 10:44:24 · answer #8 · answered by laticia 3 · 0⤊ 0⤋
Total mass of the protons ,neutrons,electrons,pions ,kaions,antiprotons,........ combined together
2007-07-19 05:57:05 · answer #9 · answered by punit g 2 · 0⤊ 0⤋
On Earth, it is called the weight.
2007-07-19 05:42:51 · answer #10 · answered by Sho'nuff 3 · 0⤊ 0⤋