Question

What is absolute mass of C-12 atom?

Answer 1

This only applies to C-12 because it is used to define the atomic mass scale; in other isotopes, binding energies will affect the results. Ravikumar is right. It is "the product of 12 amu*1.66*10^-24 grams

Answer 2

This only applies to C-12 because it is used to define the atomic mass scale