Answer:
6.051 × 10²³ atoms contain 1.005 moles.
Step-by-step explanation:
The given problem will solve by using 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.
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
Given data:
Number of atoms = 6.051 × 10²³ atoms
Number of moles = ?
Solution:
One mole = 6.022 × 10²³ atoms
For 6.051 × 10²³ atoms:
(1 mol / 6.022 × 10²³ atoms) × 6.051 × 10²³ atoms
0.17 × 6.051 × 10²³ × 10⁻²³ moles
1.005 moles
So,
6.051 × 10²³ atoms contain 1.005 moles.