Answer:
0.0041 mol
Explanation:
Given data:
Number of formula units = 2.45 × 10²¹ formula units
Number of moles = ?
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions ,formula units and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ formula units
2.45 × 10²¹ formula units × 1 mol / 6.022 × 10²³ formula units
0.41 × 10⁻² mol
0.0041 mol
