Aluminum has a density of 2.70 g/cm³ and a molar mass of 26.98 g/mol. Its atomic radius is 143 x 10⁻¹⁰ cm. 4.10 grams of aluminum foil has an area of 1012.6 cm².
a. Determine the thickness of the foil.
b. Determine the number of layers of aluminum atoms in the foil.
c. Estimate Avogadro’s Number.
(Hint: Avogadro’s Number has a unit of atoms/mol. 2.70 g of aluminum has a volume of 1 cm³. The volume of an aluminum atom has the unit of cm³/atom and V = (4/3)πr³.)