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Unit 7 Stoichiometry
Mole Conversion Worksheet Name:______________________________
There are three mole equalities. They are:
1 mol = 6.02 x 10
23
particles
1 mol = molar mass in g (periodic table)
1 mol = 22.4 L for a gas at STP
Each equality can be written as a set of two conversion factors. They are:
x particles
mole
23
6. 02 10
mole
x particles
23
1 mole
molar mass
molar mass
mole
L
mole
mole
L
Using the factor label method: You weigh a 24 K gold chain, and find that it weighs 400 grams. Determine
how many moles of Gold atoms you have.
Mole-Particle Conversions (Use the factor label method and show your work.)
- How many moles of magnesium is 3.01 x 10
atoms of magnesium?
- How many molecules are there in 4.00 moles of glucose, C 6
H
O
- How many moles are 1.20 x 10
atoms of phosphorous?
- How many atoms are in 0.750 moles of zinc?
- How many molecules are in 0.400 moles of N 2
O
Mole-Mass Conversions
- How many moles in 28 grams of CO 2
- What is the mass of 5 moles of Fe 2
O
- Find the number of moles of argon in 452 g of argon.
- Find the grams in 1.26 x 10
mol of HC 2
H
O
- Find the mass in 2.6 mol of lithium bromide.
Mole-Volume Conversions
- Determine the volume, in liters, occupied by 0.030 moles of a gas at STP.
- How many moles of argon atoms are present in 11.2 L of argon gas at STP?
- What is the volume of 0.05 mol of neon gas at STP?
Multiple Variable Conversions
- How many oxygen molecules are in 3.36 L of oxygen gas at STP?
- Find the mass in grams of 2.00 x 10
molecules of F 2
- Determine the volume in liters occupied by 14 g of nitrogen gas at STP.
- Find the mass, in grams, of 1.00 x 10
molecules of N
How many particles are there in 1.43 g of a molecular compound with a gram
molecular mass of 233 g?
- Aspartame is an artificial sweetener that is 160 times sweeter than sucrose (table sugar) when dissolved in
water. It is marketed by G.D. Searle as Nutra Sweet. The molecular formula of aspartame is C 14
H
N
O
a) Calculate the molar mass of aspartame.
b) How many moles of molecules are in 10 g of aspartame?
c) What is the mass in grams of 1.56 moles of aspartame?
d) How many molecules are in 5 mg of aspartame?
e) How many atoms of nitrogen are in 1.2 grams of aspartame?
