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WorksheetsMole Ratio Conceptual
Total questions: 22
Worksheet time: 19mins
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.
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.
3.
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
4.
N2 + 3H2 → 2NH3
What is the mole ratio between Nitrogen and Ammonium in the above reaction?
What is the mole ratio between Nitrogen and Ammonium 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
5.
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
6.
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
7.
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
8.
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
9.
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
10.
What number should be in front of N2 in this chemical equation?
___N2+___F2 --> ___ NF3
___N2+___F2 --> ___ NF3
a)
1
b)
2
c)
3
d)
4
11.
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
12.
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
13.
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
14.
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
15.
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
16.
How many atoms of iodine are in a mole of iodine?
a)
6.02 x 1023
b)
126.9
c)
53
d)
63.55g
17.
What is the molar mass of NaCl?
a)
58.45g/mol
b)
12g/mol
c)
28g/mol
d)
6.02 x 1023
18.
What would be the mass of 1.5mol H2O
a)
20 g
b)
32 g
c)
27 g
d)
40 g
19.
How many octane molecules would be in 8.4 moles of octane (C8H18)?
a)
5.77 x 1023
b)
5.77 x 1026
c)
5.04 x 1024
d)
5.04 x 1023
20.
Which has more molecules?
a)
1 mole H2O
b)
They are all the same
c)
1 mole NaCl
d)
1 mole Al(OH)3
21.
How many moles of carbon atoms are there in 5g of carbon?
a)
0.42 mol
b)
60 mol
c)
17 mol
d)
7 mol
22.
What is the mass of 54.3x1045 molecules of BeO?
a)
3.27x1070 g
b)
2.25 x1024 g
c)
9.01 x1022g
d)
1.31 x1069g
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