Name __________________________________________________________ Period ___________
Chapter 4 Keller/Rosenzweig
Mole Conversions
Mole: the amount of a substance that contains 6.02 x 1023 respective particles of that
substance
Avogadro’s number: 6.02 x 1023
Molar Mass: the mass of one mole of an element
CONVERSION FACTORS:
1 mole = 6.02 x 1023 atoms 1 mole = atomic mass (g)
Try:
1. How many atoms are in 6.5 moles of zinc?
6.5 moles 6.02 x 1023 atoms = 3.9 x 1024 atoms
1 mole
2. How many moles of argon are in a sample containing 2.4 x 1024 atoms of argon?
2.4 x 1024 atoms of argon 1 mole = 4.0 mol
6.02 x 1023 atoms
3. How many moles are in 2.5g of lithium?
2.5 grams Li 1 mole = 0.36 mol
6.9 g
4. Find the mass of 4.8moles of iron.
4.8 moles 55.8 g = 267.84 g = 270g
1 mole
