Chem 120 Final Exam | Questions with 100% Verified Correct Answers 2025/2026

Chem 120 Final Exam | Questions with 100% Verified Correct Answers 2025/2026 Molecular mass (molecular weight) - Correct Answer the sum of the atomic masses, in atomic mass units, of all the atoms in the formula of a compound Empirical formula - Correct Answer a chemical formula showing the ratio of elements in a compound rather than the total number of atoms Avogadro's number (Mole) - Correct Answer 6.02 x 10^23 Proton - Correct Answer A subatomic particle that has a positive charge and that is found in the nucleus of an atom Neutron - Correct Answer A subatomic particle that has no charge and that is found in the nucleus of an atom Electron - Correct Answer A subatomic particle that has a negative charge and orbits the nucleus Valence electron - Correct Answer an electron that is found in the outermost shell of an atom