a unit of mass used to express atomic and molecular weights, equal to one-twelfth of the mass of an atom of carbon-12. It is equal to approximately 1.66 x 10^-27 kg.
AMU is defined as one twelfth of the mass of an unbound neutral atom of carbon-12 . it equals to 1.66053892 × 10-27 kilograms.
it is the mass of the atom at rest
1 atomic mass unit is equivalent to the 1/12 the mass of a carbon-12 atom at rest. This is not considered an si unit because it is defined by a definition and not experimentally
Atomic mass is a mass, the SI units of mass are kg. The atomic mass unit is equal to one-twelfth the mass of a carbon-12 atom or 1,660538921(73)×10−27 kg. Atomic mass unit is recognized now as a non-SI unit.
A. carbon -12 atom
The atomic mass unit is used to express the measure of the atomic mass.
AMU stands for atomic mass unit. 1 amu is 1.66053892 times 10 up to the negative 27 kilograms.
Atomic mass is measured in a unit called an "atomic mass unit". This unit is defined as 1/12 of the mass of a carbon-12 atom at ground state.An atomic mass unit is approximately 1.66053886 x 10-27 kg.Atomic mass is measured in atomic mass units (amu) and Daltons.
"It is defined as one twelfth of the rest mass of an unbound atom of carbon-12 in its nuclear and electronic ground state..." (Wikipedia, atomic mass unit, retrieved 2011-01-19). An atomic mass unit is approximately the mass of a neutron, or of a proton.
1 atomic mass unit is equivalent to the 1/12 the mass of a carbon-12 atom at rest. This is not considered an si unit because it is defined by a definition and not experimentally
Atomic mass is a mass, the SI units of mass are kg. The atomic mass unit is equal to one-twelfth the mass of a carbon-12 atom or 1,660538921(73)×10−27 kg. Atomic mass unit is recognized now as a non-SI unit.
A. carbon -12 atom
The atomic mass unit is not a SI unit. An atomic mass unit is equal to 1/12 from the atomic mass of the isotope 12C.
Atomic mass unit
The atomic mass unit is used to express the measure of the atomic mass.
AMU stands for atomic mass unit. 1 amu is 1.66053892 times 10 up to the negative 27 kilograms.
Atomic Mass Unit (amu)
Roughly speaking, the number of protons plus the number of neutrons. To be precise, the atomic mass is defined as the mass in atomic mass units; an atomic mass unit is 1/12 of the mass of a carbon-12 atom. This atomic mass unit is approximately equal to the mass of a proton or neutron. However, protons and neutrons don't have exactly the same mass; also, when these particles get together, there is a so-called "mass deficit".
the answer is the atomic mass unit