Question

7 a unit of mass used to show atomic mass, equal to one - twelfth of the mass of an atom of carbon - 12, is called the _______. (1 point) atomic mass unit (amu) gram (g) kilogram (kg) pound (lb)

Explanation:

The atomic mass unit (amu) is defined as one - twelfth of the mass of a carbon - 12 atom and is used to express atomic mass. Grams, kilograms, and pounds are much larger and not used for atomic mass on this scale.

Answer:

atomic mass unit (amu)