Name: _______________________________________________Date: ________________Period: ______
Mole – Particle and Mole – Mass Practice
1 mole = 6.023 x 1023 atoms (molecules)
1 mole = molar mass
X
X
MASS
(grams)
Molar Mass
MOLES
(mol)
÷
23
6.02 x10
÷
1. How many moles of copper are 4.57 x 1013 atoms of copper?
2. How many molecules of lithium oxide (Li2O) are 4.57 moles of lithium oxide?
ATOMS or
MOLECULE
S
X
X
MASS
(grams)
Molar Mass
÷
MOLES
(mol)
23
6.02 x10
÷
ATOMS or
MOLECULE
S
3. How many moles are there in 2.45 g potassium chloride (KCl)? Molar mass = __________________
4. How many grams are in 3.55 moles of aluminum sulfide (Al2S3)? Molar mass = __________________