The molecular formula specifies the number of atoms of each element in one molecule. For iso-octane this is C8H18. This means that there are 8 atoms of carbon and 18 atoms of hydrogen in one molecule of C8H18. This also means that in one mole of iso-octane, there are 8 moles of carbon and 18 moles of hydrogen.
As shown in Table 2, the average iodine adsorption number per gram of the carbon black of the set of E2-1ËE2-5 is 124.8 mg as compared to 126 mg per gram of the carbon black sample determined by the titration method according to the standard of ASTM-D1510.
With 131 particles in the nucleus, Iodine will have 78 neutrons. The atomic number of Iodine (53) never changes, and the atomic number of an element is the number of protons i â¦ t has. Therefore, 131 particles (protons or neutrons) minus 53 protons = 78 neutrons.