Question

How many moles are represented by 3.01x10^23 helium atoms

a. 1 mole

b. 0.50 moles

c. 0.75 moles

d. 5 moles

Answer 1

b. 0.50 moles

Step-by-step explanation:

To solve this problem we use Avogadro's number (6.023x10²³ atoms/mol).

By dividing the number of atoms (or molecules) by that number, we can calculate how many moles they represent.

• 3.01x10²³ atoms ÷ 6.023x10²³ atoms/mol = 0.50 moles

So the answer is option b. 0.50 moles.