Question

How many moles of potassium are 5.01 ×10 22 atoms of potassium

Answer 1

We know that 1 mol of any compound has 6.02x10^23 formula units (atoms, molecules, etc.)

6.02x10^23 is the Avogadro's number

We have here an atom of K, potassium. The, 1 mol of potassium is equal to 6.02x10^23 atoms of K.

Now we want to know how many moles are in 5.01x10^22 atoms of potassium

We proceed like this:

1 mol of K -------- 6.02x10^23 atoms of K

x -------- 5.01x10^23 atoms of K

x = 0.832 moles

Answer: 0.832 moles of K