From the given density, 19.3 g/cm³, every cubic centimeter of tungsten (W) has a mass of 19.3 grams. Determine the amount of substance in moles by dividing the mass by the molar mass, (19.3 g) x (1 mole/ 183.84 g) = 0.1044 moles The number of atoms is calculated by multiplying the amount in moles by the Avogadro's number. (0.1044 moles) x (6.022x10^23 atoms / moles) = 6.29x10^22 atoms. Thus, there are approximately 6.29x10^22 atoms of W.
