Answer:
15.1 × 10²³ atoms
Explanation:
Given data:
Number of moles of Zn = 2.50 mol
Number of atoms = ?
Solution:
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.
The number 6.022 × 10²³ is called Avogadro number.
For example,
18 g of water = 1 mole = 6.022 × 10²³ molecules of water
1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen
For 2.50 mole of Zn:
one mole of zinc = 6.022 × 10²³ atoms
2.50 × 6.022 × 10²³ atoms
15.1 × 10²³ atoms
