1. Determine the number of atoms in 2.50 mol Zn.

2. so molznxlmolo

"6.02x10

15.1 * 10²³ atoms

Explanation:

Given dа ta:

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