Worksheets6.07 Moles and Chemical Equations Extra Practice
Total questions: 11
Worksheet time: 39mins
Name
Class
Date
1.
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
2.
In the reaction 2 H2 + O2 → 2 H2O what is the mole ratio of oxygen to water
a)
1:2
b)
2:1
c)
3:4
d)
4:3
3.
In the equation 6 CO2 + 6 H2O → C6H12O6 + 6 O2, the mole ratio of water to oxygen is:
a)
6:6
b)
1:6
c)
6:1
4.
3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe
What is the Ratio of moles of Mg to moles 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
5.
3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe
What is the Ratio of moles of MgO to moles 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 following reaction, how many moles of copper is need to produce 8 moles of silver?
2AgNO3 + Cu --> Cu(NO3)2 + 2Ag HINT: Start with 8 moles Ag
2AgNO3 + Cu --> Cu(NO3)2 + 2Ag HINT: Start with 8 moles Ag
a)
1 moles
b)
2 moles
c)
4 moles
d)
8 moles
7.
N2 + 3H2 −-> 2NH3
How many moles of ammonium are produced when 3 moles of nitrogen react with hydrogen?HINT: Start with 3 mol N2
How many moles of ammonium are produced when 3 moles of nitrogen react with hydrogen?HINT: Start with 3 mol N2
a)
6 moles Ammonium
b)
1.5 moles ammonium
c)
9 moles ammonium
d)
9 moles hydrogen
8.
Consider the balanced equation:
Na2SIO3(s) + 8HF(aq) --> H2SiF6 (aq) + 2NaF(aq) + 3H2O(l)
If 9 moles of water are produced at the end of the reaction, how many moles of hydrofluoric acid were used?
Na2SIO3(s) + 8HF(aq) --> H2SiF6 (aq) + 2NaF(aq) + 3H2O(l)
If 9 moles of water are produced at the end of the reaction, how many moles of hydrofluoric acid were used?
a)
24 moles
b)
3.375 moles
c)
3 moles
d)
.375 moles
9.
The combustion of acetylene gas is represented below.
2C2H2 + 5O2--> 4CO2 + 2H2O
If 23.24 moles of C2H2 were to react, how many moles of O2 would be needed?
2C2H2 + 5O2--> 4CO2 + 2H2O
If 23.24 moles of C2H2 were to react, how many moles of O2 would be needed?
a)
116.2 mol
b)
11.62 mol
c)
9.296 mol
d)
58.1 mol
10.
N2 + 3H2 --> 2NH3
What is the total number of moles of NH3 produced when 10 moles of H2 reacts completely with N2?
What is the total number of moles of NH3 produced when 10 moles of H2 reacts completely with N2?
a)
6.7
b)
2.0
c)
3.0
d)
15.0
11.
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
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