Answer:
The answer is
1.74 × 10²⁴ potassium atoms
Explanation:
To find the number of atoms given the number of moles we use the formula
N = n × L
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question
n = 2.89 moles
We have
N = 6.02 × 10²³ × 2.89
We have the final answer as
1.74 × 10²⁴ potassium atoms
Hope this helps you
