How many atoms are in 12.7grams of lithium?

Answer 1

12.7 grams lithium (1 mole Li/6.941 grams)(6.022 X 10^23/1 mole Li)

= 1.10 X 10^24 atoms of lithium

Answer 2

To determine the number of atoms in 12.7 grams of lithium, you need to first calculate the number of moles using the molar mass of lithium (6.94 g/mol). Then, use Avogadro's number (6.022 x 10^23 atoms/mol) to convert from moles to atoms.