The atomic mass of an atom (in amu) is equal to question 11 options: the total number of electrons the total number of its protons and neutrons the total number of protons the total number of neutrons the total number of its protons, neutrons, and electrons

the total number of its protons and neutrons

Explanation:

An atom is represented by

here we know that

z = atomic number

it represent the total number of protons or total number of electrons present in an neutral atom

A = mass number

it represents the total number of neutrons and protons present inside the nuclei of an atom

this is also known as atomic mass of an atom in amu (atomic mass unit)

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.