When it comes to learning chemistry, one of the most important things students must learn is stoichiometry. A great way to practice this skill is by using stoichiometry worksheets. These sheets can help students master the calculations necessary for solving problems related to chemical reactions. In addition, worksheets can also help students become better problemsolvers. There are many different types of stoichiometry worksheets available online, so finding the right one for your needs should be easy. However, before choosing a worksheet, it is important to understand what type you need. This article will discuss the different types of stoichiometry worksheets and how to choose the right one for your needs.
You'll discover info about the type of form you want to complete in the table. It will tell you how much time you'll need to fill out stoichiometry worksheet, what parts you will have to fill in, and so on.
Question  Answer 

Form Name  Stoichiometry Worksheet 
Form Length  2 pages 
Fillable?  No 
Fillable fields  0 
Avg. time to fill out  30 sec 
Other names  NaF, Na2CO3, Fe203, stoichiometry worksheet 
Stoichiometry Worksheet and Key
2 KClO3 è 2 KCl + 3 O2
1. How many moles of O2 will be formed from 1.65 moles of KClO3?
1.65 mol KClO3 
mol O2 
mol O2 

= 


mol KClO3 

2. How many moles of KClO3 are needed to make 3.50 moles of KCl?
3.50mol KCl
= mol KClO3
3. How many moles of KCl will be formed from 2.73 moles of KClO3?
=
4 Fe + 3 O2 è 2 Fe2O3
4. How many moles of Fe2O3 are produced when 0.275 moles of Fe is reacted?
0.275 mol Fe
= mol Fe2O3
5. How many moles of Fe2O3 are produced when 31.0 moles of O2 is reacted?
=
6. How many moles of O2 are needed to react with 8.9 moles of Fe?
=
2H2O è 2 H2 + O2
7.How many moles of O2 are produced when 1.26 moles of H2O is reacted?
8.How many moles of H2O are needed to produce 55.7 moles of H2?
9.If enough H2O is reacted to produce 3.40 moles of H2, then how may moles of O2 must have been made? (a bit challenging, but just think about it and you can probably figure it out)
2 KClO3 è 2 KCl + 3 O2
10. How many grams of O2 will be formed from 3.76 grams of KClO3? 


3.76g KClO3 1 mol KClO3 
mol O2 
g O2 = 
g O2 
122.55 g KClO3 
mol KClO3 
mol O2 

11. How many grams of KClO3 are needed to make 30.0 grams of KCl?
30.0 g KCl 
mol KCl 
mol KClO3 
g KClO3 
= 

g KCl 
mol KCl 
mol KClO3 



12.How many grams of KCl will be formed from 2.73 g of KClO3?
2.73g KClO3
=
4 Fe + 3 O2 è 2 Fe2O3
13. How many grams of Fe2O3 are produced when 42.7 grams of Fe is reacted?
42.7 g Fe 
mol Fe 
mol Fe2O3 
g Fe2O3 

g Fe 
mol Fe 
= 

mol Fe2O3 
14. How many grams of Fe2O3 are produced when 17.0 grams of O2 is reacted?
17.0 g O2 
= 

15. How many grams of O2 are needed to react with 125 grams of Fe?
=
Some cars can use butane (C4H10) as fuel:

2 C4H10 + 13 O2 è 8 CO2 + 10 H2O 

16. 
How many grams of CO2 are produced from the combustion of 100. grams of butane? 

100. g C4H10 
= 




17. 
How many grams of O2 are needed to react with of 100. grams of butane? 

100. g C4H10 
= 




18 How many grams of H2O are produced when 5.38g of O2 is reacted? 

g KClO3
g KCl
g Fe2O3
g Fe2O3
g CO2
g O2
KEY
2 KClO3 è 2 KCl + 3 O2
1. How many moles of O2 will be formed from 1.65 moles of KClO3?
3 mol O
=2.48
2 mol KClO3
2.How many moles of KClO3 are needed to make 3.50 moles of KCl?2mol O21.65 mol KClO3
3.50 mol KCl 
2 mol KClO3 
mol KClO3 

= 3.50 


2 mol KCl 

3. How many moles of KCl will be formed from 2.73 moles of KClO3?
2.73 moles KClO3 
2 mol KCl 
2.73 mol KCl 

= 


2 mol KClO3 

4 Fe + 3 O2 è 2 Fe2O3
4. How many moles of Fe2O3 are produced when 0.275 moles of Fe are reacted?
0.275 mol Fe 
2 mol Fe2O3 
= 
0.138 mol Fe2O3 

4 mol Fe 




5. How many moles of Fe2O3 are produced when 31.0 moles of O2 are reacted?
31.0 mol O2 
2 mol Fe2O3 
= 20.7 mol Fe2O3 

3 mol O2 



6. How many moles of O2 are needed to react with 8.9 moles of Fe?
8.9 mol Fe 
3 mol O2 
= 
6.7 
mol O2 

4 mol Fe 





2H2O è 2 H2 + O2
7.How many moles of O2 are produced when 1.26 moles of H2O is reacted?
1.26mol H2O 1 mol O2= .630 mol O2 2 mol H2O
8.How many moles of H2O are needed to produce 55.7 moles of H2?
55.7mol H2 2 mol H2O = 55.7 mol H2O 2 mol H2
9.If enough H2O is reacted to produce 3.40 moles of H2, then how may moles of O2 must have been made? (a bit challenging, but just think about it and you can probably figure it out)
3.40 mol H2 1 mol O2 
1.70 
mol O2 
= 

2 mol H2 


2 KClO3 è 2 KCl + 3 O2
10. How many grams of O2 will be formed from 3.76 grams of KClO3? 


3.76g KClO3 1 mol KClO3 
3 mol O2 
32.00 g O2 
= 1.47 g O2 
122.55 g KClO3 
2 mol KClO3 
1 mol O2 

11. How many grams of KClO3 are needed to make 30.0 grams of KCl?
30.0 g KCl 
1 mol KCl 
2 
mol KClO3 
122.55 g KClO3 
= 49.3 g KClO3 

74.55 g KCl 
2 
mol KCl 
1 mol KClO3 
12. How many grams of KCl will be formed from 2.73 g of KClO3?
2.73 g KClO3 1 mol KCl O3 
2 
mol KCl 
74.55 g 
= 1.66 g KCl 
122.55 g KClO3 
2 
mol KCl O3 
1 mol KCl 
4 Fe + 3 O2 è 2 Fe2O3
13. How many grams of Fe2O3 are produced when 42.7 grams of Fe is reacted?
42.7 g Fe 
1 
mole Fe 
2 
mol Fe2O3 
159.70 g Fe2O3 
= 
61.0 g Fe2O3 


55.85 
g Fe 
4 
mol Fe 
1 mol Fe2O3 





14. How many grams of Fe2O3 are produced when 17.0 grams of O2 is reacted? 
= 
56.6 g Fe2O3 

17.0 g O2 
1 mol O2 
2 mol Fe2O3 
159.70 
g Fe2O3 











32.00 
g O2 
3 
mol O2 
1 mol Fe2O3 


15. How many grams of O2 are needed to react with 125 grams of Fe?
125 g Fe 
1 mol Fe 
3 mol O2 
32.00 g O2 
= 
53.7 
g O2 


55.85 
g Fe 
4 
mol Fe 
1 mol O2 



g 








Some cars can use butane (C4H10) as fuel: 









2 C4H10 + 13 O2 è 8 CO2 + 10 H2O 




16. How many grams of CO2 are produced from the combustion of 100. grams of butane? 


100. g C4H10 
1 mol C4H10 
8 mol CO2 
44.01 g CO2 
= 
303 
g CO2 


58.14 g C4H10 
2 mol C4H10 
1 mol CO2 





17. How many grams of O2 are needed to react with of 100. grams of butane?
100. g C4H10 
1 mol C4H10 
13 mol O2 
32.00 g O2 
= 
358 
g O2 

58.14 g C4H10 
2 mol C4H10 
1 mol O2 






18 How many grams of H2O are produced when 5.38g of O2 is reacted? 




5.38g O2 
1 mol O2 
10 mol H2O 
18.02 g H2O 
= 
2.33 
g H2O 

32.00 g O2 
13 mol O2 
1 mol H2O 




