Answer:
Stearic acid has the chemical formula of C18H36O2. To find the number of protons in this molecule, we first need to know the number of protons for each of its constituent atoms. This information can be found in any chemistry book. The results are that carbon has 6 protons per atom, hydrogen has 1, and oxygen has 8. So, after doing some simple arithmetic, we find that stearic acid has 6*18 + 1*36 + 8*2 = 160 protons per molecule.