Density of aluminum 2.70g/cm.^3 -how many atoms thick is aluminum foil if each atom is 236pm in diameter? (1pm10^-12m)??
You're missing some information like the thickness of the sheet of foilLet's take a slab of Al which is 1 m thick The number of atoms to span this is 1 m / 236 10^-12 m 4.2 10^9 atoms
You're missing some information like the thickness of the sheet of foilLet's take a slab of Al which is 1 m thick The number of atoms to span this is 1 m / 236 10^-12 m 4.2 10^9 atoms