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WorksheetsRatios Chemical Equations
Total questions: 22
Worksheet time: 2hrs 48mins
Name
Class
Date
1.
What can be determined from a balanced chemical equation?
a)
Mole ratio of any two substances in the reaction
b)
Energy released in the reaction.
c)
Electron configuration of all elements in the reaction.
d)
Mechanism involved in the reaction.
2.
Mole ratios are obtained from the
a)
balanced chemical equation
b)
periodic table
c)
molar mass
3.
What coefficient should be used to make the following equation balanced?
N2+O2--> _NO
N2+O2--> _NO
a)
1
b)
2
c)
3
d)
4
4.
In the equation 2 Al2O3 → 4 Al + 3 O2, what is the mole ratio of aluminum to oxygen?
a)
10:6
b)
3:4
c)
4:3
d)
2:3
5.
For the Balanced Reaction: 3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe; What is the Ratio of moles of MgO to moles Fe?
a)
3mol Mg / 2 mol Fe
b)
2 mol Mg/ 3 mol Fe
c)
1 mol Fe/ 2 mol Fe
d)
3 mol MgO / 2 mol Fe
6.
For the Balanced Reaction: 3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe; What is the Ratio of moles of Mg to moles Fe?
a)
3mol Mg / 2 mol Fe
b)
2 mol Mg/ 3 mol Fe
c)
1 mol Fe/ 2 mol Fe
d)
3 mol MgO / 2 mol Fe
7.
What is the mole ratio of H2O to H3PO4 in the following chemical equation? P4O10 + 6 H2O --> 4 H3PO4
a)
6:4
b)
4:6
c)
1:3
d)
3:1
8.
N2 + 3H2 → 2NH3
What is the mole ratio between Nitrogen and Ammonia in the above reaction?
What is the mole ratio between Nitrogen and Ammonia in the above reaction?
a)
1 moles NH3 / 2 moles N2
b)
2 moles NH3 / 1 moles N2
c)
2 moles N2 / 3 moles NH3
d)
1 moles N2 / 3 moles NH3
9.
Which of the following represent a mole ratio between silver nitrate and copper(II) nitrate in the following reaction:
2AgNO3 + Cu --> Cu(NO3)2 + 2Ag
2AgNO3 + Cu --> Cu(NO3)2 + 2Ag
a)
2 mol AgNO3 / 2 mol Ag
b)
2 mol Ag / 2 mol AgNO3
c)
2 mol AgNO3 / 2 mol Cu(NO3)2
d)
2 mol AgNO3 / 1 mol Cu(NO3)2
10.
For the following reaction, how many moles of silver is produced, if 10 moles of silver nitrate is completely reacted during the reaction?
2AgNO3 + Cu --> Cu(NO3)2 + 2Ag
2AgNO3 + Cu --> Cu(NO3)2 + 2Ag
a)
2 moles
b)
2.5 moles
c)
5 moles
d)
10 moles
11.
For the following reaction, how many moles of copper is need to produce 8 moles of silver?
2AgNO3 + Cu --> Cu(NO3)2 + 2Ag
2AgNO3 + Cu --> Cu(NO3)2 + 2Ag
a)
1 moles
b)
2 moles
c)
4 moles
d)
8 moles
12.
N2 + 3H2 --> 2NH3
How many moles of N2 is needed to react with 6 moles of H2?
How many moles of N2 is needed to react with 6 moles of H2?
a)
6.7
b)
2.0
c)
3.0
d)
15.0
13.
4NH3 + 5O2-->4NO + 6H2O
What is the total number of moles of H2O produced when 12 mole of NH3 is completely consumed?
What is the total number of moles of H2O produced when 12 mole of NH3 is completely consumed?
a)
15
b)
18
c)
20
d)
24
14.
2Na + S -->Na2S
What is the total number of moles of S that reacts when 4.0 moles of Na were completely consumed?
What is the total number of moles of S that reacts when 4.0 moles of Na were completely consumed?
a)
1
b)
2
c)
0.5
d)
4
15.
6CO2 + 6H2O --> C6H12O6 + 6O2
What is the total number of moles of water needed to make 2.5 moles of C6H12O6?
What is the total number of moles of water needed to make 2.5 moles of C6H12O6?
a)
2.5
b)
6
c)
12
d)
15
16.
Given the reaction: 4Al + 3O2 --> 2Al2O3
How many moles of Aluminum oxide do you have if you have 2 moles of Al?
How many moles of Aluminum oxide do you have if you have 2 moles of Al?
a)
3 mole
b)
2 mole
c)
1 mole
d)
0.5 mole
17.
N2 + 3H2 −-> 2NH3
How many moles of ammonia are produced when 3 moles of nitrogen react with hydrogen?
How many moles of ammonia are produced when 3 moles of nitrogen react with hydrogen?
a)
6 moles ammonia
b)
1.5 moles ammonia
c)
9 moles ammonia
d)
9 moles hydrogen
18.
2Na + S -->Na2S
What is the total number of moles of Na2S produced when 8.0 moles of Na were completely consumed?
What is the total number of moles of Na2S produced when 8.0 moles of Na were completely consumed?
a)
1
b)
2
c)
0.5
d)
4
19.
H2+Cl2-->2HCl
What is the total number of moles of HCl produced when 3 moles of H2 is completely consumed?
What is the total number of moles of HCl produced when 3 moles of H2 is completely consumed?
a)
5
b)
2
c)
3
d)
6
20.
4NH3 + 5O2-->4NO + 6H2O
What is the total number of moles of NO produced when 1 mole of O2 is completely consumed?
What is the total number of moles of NO produced when 1 mole of O2 is completely consumed?
a)
1
b)
1.2
c)
0.8
d)
4
21.
H2+Cl2-->2HCl
How many moles of Cl2 are needed to react with 3 moles of H2?
How many moles of Cl2 are needed to react with 3 moles of H2?
a)
5
b)
2
c)
3
d)
6
22.
6CO2 + 6H2O --> C6H12O6 + 6O2
What is the total number of moles of CO2 needed to make 2 moles of C6H12O6?
What is the total number of moles of CO2 needed to make 2 moles of C6H12O6?
a)
2.5
b)
6
c)
12
d)
15
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