Answer:
0.071 moles of Na₃PO₄
Explanation:
Given data:
Number of moles of Na₃PO₄ = ?
Number of molecules of Na₃PO₄ = 4.3×10²² molecules
Solution:
1 mole contain 6.022×10²³ molecules
4.3×10²² molecules × 1mol / 6.022×10²³ molecules
0.71×10⁻¹ mol
0.071 mol
The number 6.022 × 10²³ is called Avogadro number.
Avogadro number:
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
