ocr: T . . -.srmudringhslunidramew wubrin the helpof the periodic table. H20 Water consists of 2 atoms of Hydrogen and 1 atom 1 of Oxygen. From the periodic table we see. H Hydrogen has a mass of approx. 1.0 units 1.008 Oxygen has a mass of approx. 16.0 units Water consists of 2 Hydrogen atoms, each having - a mass of one unit, plus one Oxygen atom having . a mass of 16units. 1.0 + 1.0 + 16.0=180 units 15.999 for water's formula Inass. Water' S formula mass = 18.0 units One mole of water == 18.0 grams
