Question

How many atoms of calcium, Ca would be equal to 5.472 X 104 moles Ca?

Answer 1

Answer:
3.29 × 10²⁸ Atoms

Solution:
Moles and Number of atoms are related to each other as,

Moles = Number of Atoms / 6.022 × 10²³ ------- (1)

Data Given;
Moles = 5.472 ×10⁴

Number of Atoms = ?

Solving eq. 1 for Number of Atoms,

Number of Atoms = Moles × 6.022 × 10²³

Putting values,

Number of Atoms = 5.472 ×10⁴ mol × 6.022 × 10²³ atoms.mol⁻¹

Number of Atoms = 3.29 × 10²⁸ Atoms