Question

Atomic mass of oxygen is 23 amu. What does it mean?

Answer 1

Answer:

Atomic mass of oxygen is 16u not 23.it means that one mole of oxygen has a Maas of 16u.

Answer 2

Answer:

An atomic mass unit (symbolized AMU or amu) is defined as precisely 1/12 the mass of an atom of carbon-12. The carbon-12 (C-12) atom has six protons and six neutrons in its nucleus. In imprecise terms, one AMU is the average of the proton rest mass and the neutron rest mass.15.999 u

Oxygen/Atomic mass