How to Calculate the Number of Moles in a Given Number of Molecules

When we want to find the number of moles in a substance given its number of entities, we can use a specific formula. The formula is:

n = N/L

Where:

n is the number of moles

N is the number of entities

L is Avogadro's constant, which is 6.02 × 10^23 entities

Using the data from the question, we can calculate the number of moles in 1.81 x 10^24 molecules of CO2:

n = 1.81 x 10^24 / 6.02 x 10^23 = 3.006644...

Therefore, the final answer is approximately 3.01 moles.

I hope this explanation helps you understand how to calculate the number of moles in a given number of molecules.