Question

define atomic mass unit​

Answer 1

Answer:

unit of mass used to express atomic and molecular weights, equal to one twelfth of the mass of an atom of carbon-12.

Answer 2

Answer:

atomic mass unit is the unit of mass of the atoms.. ..

It is defined as a. m. u and 1 amu is defined as exactly equal to 1/12 of the mass of 1 carbon 12 atom and it is equal to 1.66×10-²⁴g..

for example hydrogen has mass

H = 1.008 a. m. u

H=1

oxygen has atomic mass.

oxygen = 15.995 a. m. u

O= 16.