Question

What’s are the masses

Answer 1

A large amount or number of something any things

Step-by-step explanation:

The masses refers to a large,general group of regular folks_ the common people of a society.

Answer 2

carbon-12 has a mass of 12.

carbon-13 has a mass of 13

Step-by-step explanation:

by adding the protons and neutrons of each atom

6+6=12

6+7=13