Question

!please help me if u can asap!ty!
1. How many moles of potassium are present in 4.23 x 10^25 potassium atoms? (show solution)​

Answer 1

Answer:

70.27 moles

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

$n = \frac{N}{L}$

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 we have

$n = \frac{4.23 \times {10}^{25} }{6.02 \times {10}^{23} } \\ = 70.265780...$

We have the final answer as

70.27 moles

Hope this helps you