1 u is 1/12 of the weight of a (12)C isotope, wich is ca. 1,99x10^(-23)g. 1u is therefor ca 1,66x10^(-24)g wich is 1,66x10^(-27)kg
1 amu = 1.66 x 10-27 kg
when electrons gets removed from an atom,the atom becomes positively charged.and so decreases the mass of atom.
Protons and neutrons have a mass of approximately 1 amu (atomic mass unit). The electrons way so little that we usually do not count their mass. To find the atomic mass, you need to add the number of protons to the number of neutrons in an atom.
Mass of hydrogen atom = 1 amu Mass of ununoctium atom = 294 amu So ratio = 1 : 294
A normal water molecule weighs roughly 18 Amu's, so one mole of water weighs 18 grams. -KRogersaurus
The majority of an atom's mass comes from its nucleus, where the protons and neutrons are joined. The electrons of an atom are so distant and so minuscule in size, that their weight is negligible. When calculating the mass of an atom is therefore protons+neutrons.
The mass of a silver atom is in the range of 10-25 kg, so it is impossible to be measured on a balance.
The atomic mass of argon is 4 g. So one atom of argon will weigh 0.004 kg
Kilogram (kg) is the SI unit of mass, so the mass is 4 kg in this case.
when electrons gets removed from an atom,the atom becomes positively charged.and so decreases the mass of atom.
Protons and neutrons have a mass of approximately 1 amu (atomic mass unit). The electrons way so little that we usually do not count their mass. To find the atomic mass, you need to add the number of protons to the number of neutrons in an atom.
Mass of hydrogen atom = 1 amu Mass of ununoctium atom = 294 amu So ratio = 1 : 294
A normal water molecule weighs roughly 18 Amu's, so one mole of water weighs 18 grams. -KRogersaurus
virtually all the mass in concentrated in the nucleus of the atom, as the electron's mass is so small, it is negligible.
The majority of an atom's mass comes from its nucleus, where the protons and neutrons are joined. The electrons of an atom are so distant and so minuscule in size, that their weight is negligible. When calculating the mass of an atom is therefore protons+neutrons.
so that we can easy to know the measuring mass of an atom
Chlorine has an Atom number of 17 and atom mass of 35.45. So atom mass - atom number gives you 18.45
Atomic number is the number of protons in the atom; atom mass is the total mass of the atom (usually neglecting the mass of the electrons because they have so little).