Download Stoichiometry Worksheet and Key General, Organic, and Biochemistry and more Exercises Chemistry in PDF only on Docsity!
2 KClO 3
è 2 KCl + 3 O 2
- How many moles of O 2
will be formed from 1.65 moles of KClO 3
?
- How many moles of KClO 3
are needed to make 3.50 moles of KCl?
- How many moles of KCl will be formed from 2.73 moles of KClO 3
?
4 Fe + 3 O
2
è 2 Fe
2
O
3
- How many moles of Fe 2
O
3
are produced when 0 .275 moles of Fe is reacted?
- How many moles of Fe 2
O
3
are produced when 31.0 moles of O
2
is reacted?
- How many moles of O 2
are needed to react with 8.9 moles of Fe?
2 H
2
O è 2 H
2
+ O
2
- How many moles of O 2
are produced when 1.26 moles of H 2
O is reacted?
- How many moles of H 2
O are needed to produce 55.7 moles of H
2
?
- If enough H 2
O is reacted to produce 3.40 moles of H 2
, then how may moles of O 2
must have been made?
(a bit challenging, but just think about it and you can probably figure it out)
Stoichiometry Worksheet and Key
1.65 mol KClO 3
mol KClO 3
mol O 2
= mol O 2
3.50mol KCl
= mol KClO 3
=
0.275 mol Fe
= mol Fe 2
O
3
=
=
2 KClO
3
è 2 KCl + 3 O
2
- How many grams of O 2
will be formed from 3.76 grams of KClO 3
?
- How many grams of KClO 3
are needed to make 30.0 grams of KCl?
- How many grams of KCl will be formed from 2.73 g of KClO 3
?
4 Fe + 3 O
2
è 2 Fe
2
O
3
- How many grams of Fe 2
O
3
are produced when 42.7 grams of Fe is reacted?
- How many grams of Fe 2
O
3
are produced when 17.0 grams of O
2
is reacted?
- How many grams of O 2
are needed to react with 125 grams of Fe?
Some cars can use butane (C 4
H 10
) as fuel:
2 C
4
H
10
+ 13 O
2
è 8 CO
2
+ 10 H
2
O
- How many grams of CO 2
are produced from the combustion of 100. grams of butane?
- How many grams of O 2
are needed to react with of 100. grams of butane?
18 How many grams of H O are produced when 5.38g of O is reacted?
3.76g KClO 3
mol O 2
= g O 2
1 mol KClO 3
122.55 g KClO
3 mol O
2
g O 2
mol KClO
3
30.0 g KCl mol KClO 3
mol KCl
mol KClO
3
mol KCl
g KCl
g KClO 3
g KClO
3
=
2.73 g KClO
3
g KCl
=
42.7 g Fe
mol Fe 2
O
3
mol Fe
mol Fe 2
O
3
mol Fe g Fe
g Fe 2
O
3
g Fe 2
O
3
=
17.0 g O
2
g Fe
2
O
3
=
=
- g C
4
H
10
g CO
2
=
- g C 4
H
10
g O 2
=
2 KClO 3
è 2 KCl + 3 O 2
- How many grams of O 2
will be formed from 3.76 grams of KClO 3
?
- How many grams of KClO 3
are needed to make 30.0 grams of KCl?
- How many grams of KCl will be formed from 2.73 g of KClO 3
?
4 Fe + 3 O
2
è 2 Fe
2
O
3
- How many grams of Fe 2
O
3
are produced when 42.7 grams of Fe is reacted?
- How many grams of Fe 2
O 3
are produced when 17.0 grams of O 2
is reacted?
- How many grams of O 2
are needed to react with 125 grams of Fe?
Some cars can use butane (C 4
H 10
) as fuel:
2 C
4
H
10
+ 13 O
2
è 8 CO 2
+ 10 H
2
O
- How many grams of CO 2
are produced from the combustion of 100. grams of butane?
- How many grams of O 2
are needed to react with of 100. grams of butane?
18 How many grams of H 2
O are produced when 5.38g of O 2
is reacted?
3.76g KClO
3
mol O 2
= g O
2
1 mol KClO 3
122.55 g KClO 3
mol O 2
g O
2
mol KClO 3
30.0 g KCl
mol KClO 3
mol KCl
mol KClO
3
mol KCl
g KCl
g KClO
3
=
2.73 g KClO 3
mol KCl
mol KCl
mol KCl O
3
g KClO 3
g KCl
=
74.55 g KCl
KCl
42.7 g Fe
mol Fe 2
O
3
mole Fe
mol Fe
2
O
3
mol Fe
g Fe
g Fe 2
O
3
g Fe
2
O
3
=
17.0 g O 2
1 mol O 2
mol Fe
2
O
mol O 3
2
g O 2
g Fe 2
O
3
g Fe
2
O
3
=
125 g Fe 1 mol Fe
mol O 2
mol Fe
g Fe
g O 2
g O
2
=
g
- g C 4
H
10
g CO
2
=
58.1 4 g C 4
H
10
2 mol C 4
H
10
44.0 1 g CO 2
- g C 4
H
10
g O
2
=
58.1 4 g C
4
H
10
2 mol C
4
H
10
32.0 0 g O
2
1 mol O
2
5.38g O 2
g H 2
O
=
32.0 0 g O
18.0 2 g H 2
O
1 mol H 13 mol O O
122.55 g KClO 3
159.7 0
1 mol O 2
10 mol H
2
O
159.7 0
mol Fe 2
O
mol O
2
1 mol C 4
H
10
8 mol CO 2
1 mol CO
2
1 mol C
4
H
10
13 mol O 2
mol KCl O 3
