Calculate the amount in moles

Question

Calculate the amount in moles: 2.01 x 10^23 atoms of Rubidium

a. 1.2 mol

b. None of the above

c. 3.11 mol

d. 0.5 mol

e. 1 mol

Answer 1

Use Avogadro's number for the conversion.

2.01x10²³ atoms x 1 mol / 6.02x10²³ atoms = 0.33 moles

ANS: b. None of the above