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Worksheets

Stoichiometry Mole to Mole

Total questions: 15

Worksheet time: 15mins

Name
Class
Date
1.

WO3 + H2 --> W + H2O
What coefficient goes in front of H2?

a)

1

b)

2

c)

3

d)

4

2.

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

3.

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

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

4.

2H2   +   O2  →  2H2O
How many moles of water can be produced if 8 moles H2 are used?

a)

4 moles

b)

8 moles

c)

16 moles

d)

2 moles

5.

Using the following equation:
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
How many moles of iron can be made from 3 moles of Fe2O3?

a)

6 moles Fe

b)

4 moles Fe

c)

2 moles Fe

d)

1 moles Fe

6.

2 C2H6 + 7 O2 → 4 CO2 + 6 H2O

Ethane (C2H6) combusts in the above reaction. What is the mole ratio of carbon dioxide to water?

a)
b)
c)
d)
7.

Using the balanced chemical equation:
Mg + 2 HCl --> MgCl2 + H2

How many grams of MgCl2 is produced if 4.67 moles of HCl react?

a)

219 g MgCl2

b)

4.67 g MgCl2

c)

94 g MgCl2

8.

Using the balanced chemical equation: 4NH3 + 3O2 --> 2N2 + 6H2O Determine the amount of grams of N2 is produced if 4.03 moles of NH3 react?

a)

28.0 g N2

b)

56.4 g N2

c)

2.02 g N2

9.

Using the balanced chemical equation:

2C4H10 + 13O2 --> 10H2O + 8CO2


Calculate the number of grams of C4H10 needed to produce 5.12 moles of CO2.

a)

58.0 g C4H10

b)

2.56 g C4H10

c)

74.2 g C4H10

10.

The coefficients in a chemical equation represent which type of ratio?

a)

mass to mass ratio

b)

mole to mole ratio

c)

mass to mole ratio

d)

mole to mass ratio

11.

In the reaction pictured, how many moles of hydrogen will be formed when 4 mol of HCl are consumed?

a)

6

b)

4

c)

2

d)

8

12.

For the reaction pictured how many moles of nitrogen gas (N2) are required to produce 18 mol of ammonia (NH3)?

a)

18

b)

9.0

c)

4.5

d)

36

13.

In the balanced chemical equation 2H2+O22H2O2H_2 + O_2 \rightarrow 2H_2O , what is the mole ratio of hydrogen gas to water?

a)

1:1

b)

1:2

c)

2:1

d)

2:2

14.

For the reaction N2+3H22NH3N_2 + 3H_2 \rightarrow 2NH_3 , how many moles of ammonia are produced from 6 moles of hydrogen gas?

a)

2 moles

b)

4 moles

c)

6 moles

d)

8 moles

15.

In the reaction C3H8+5O23CO2+4H2OC_3H_8 + 5O_2 \rightarrow 3CO_2 + 4H_2O , what is the mole ratio of oxygen to carbon dioxide?

a)

5:3

b)

3:5

c)

1:1

d)

2:3