Question

How many atoms are there in 3.559*10^-6 mol of krypton?

Answer 1

The answer is

`2.143 * {10}^(18) \: \: atoms`

Step-by-step 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 entities

n is the number of moles

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question

`n = 3.559 * {10}^( - 6) \: mol`

Substitute the values into the above formula and solve

That's

`N = 3.559 * {10}^( - 6) * 6.02 * {10}^(23) \\ = 2.1425 * {10}^(18)`

We have the final answer as

`N = 2.143 * {10}^(18) \: \: atoms`

Hope this helps you