Question

How many atoms are in 3.98 mol of pure aluminum?

Answer 1

`\huge{ \boxed{2.39 * {10}^(24) \: \text{atoms}}}`

Step-by-step explanation:

To find the number of entities in a given substance we use the formula

`\bold{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 = 3.98 mol

N = 3.98 × 6.02 × 10²³ = 2.39 × 10²⁴

We have the final answer as

`\bold{2.39 * {10}^(24) \: \text{atoms}}`