Name _____________________________________________ Date __________________
Mole Conversions Worksheet
Working with Moles and Particles
There are three mole equalities. They are:
1 mol = 6.02 x 1023 particles (atom, molecule or ion)
1 mol = gram formula mass of a substance
1 mol = 22.4 L for a gas at STP
The equality for moles and particles can be written as a set of two conversion factors:
particlesx
mole
23
1002.6
1
OR
mole
particlesx
1
1002.6 23
Mole-Particle Conversion Calculations: Using the Factor-Label Method
1. How many moles of magnesium is 3.01 x 1022 atoms of magnesium?
3.01 x 1022 atoms
atomsx
mole
23
1002.6
1
= 5 x 10-2 moles
2. How many molecules are there in 4.00 moles of glucose, C6H12O6?
4.00 moles
mole
moleculesx
1
1002.6 23
= 2.41 x 1024 molecules
3. How many moles are 1.20 x 1025 atoms of phosphorous?
4. How many atoms are in 0.750 moles of zinc?
5. How many molecules are in 0.400 moles of N2O5?
When the units are set up properly, the unit
you are converting FROM will cancel out.
You are left
with the desired
unit you are
converting TO.
