Answer:
a.) 6.06 x 10⁻¹ mol
b.) 4.35 x 10⁻⁴ mol
Explanation:
To find the final answer, you need to use Avogadro's number to convert between molecules and moles. Remember to arrange the ratio/conversion in a way that allows for the cancellation of units. The answer should have 3 sig figs because the given values also have 3 sig figs.
Avogadro's Number:
6.022 x 10²³ molecules = 1 mole
a.)
3.65 x 10²³ molecules 1 mole
--------------------------------- x ------------------------------------ = 6.06 x 10⁻¹ mol
6.022 x 10²³ molecules
b.)
2.62 x 10²⁰ molecules 1 mole
-------------------------------- x --------------------------------------- = 4.35 x 10⁻⁴ mol
6.022 x 10²³ molecules
