4 moles
Explanation:
o do this, we divide the number of formula units by Avogadro's number: moles = formula units / Avogadro's number = 2.41 x 10^24 formula units / 6.022 x 10^23 formula units per mole = approx 4 moles. Therefore, 2.41 x 10^24 formula units of CaCl2 represent approximately 4 moles
