Select the correct answer from each drop-down menu. the subatomic particles found in the nucleus of an atom, around them. blank 1: neutrons and electrons protons and electrons protons and neutrons blank 2: electrons neutrons protons

1. protons and neutrons

2. electrons

Protons and neutrons, Electrons

Explanation:

Protons and electrons are found in the center of the nucleus. The atomic mass is the summation of the number of neutrons and protons.  Electrons orbit around the nucleus in an atom. The atomic number is equal to the number of electrons which is also equal to the number of protons.

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.