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Mole/Mole and Mole/Mass Problems

Total questions: 6

Worksheet time: 17mins

Name
Class
Date
1.

This is the equation for the catalytic oxidation of ammonia.

4NH3 + 5O2 --> 4NO + 6H2O. How many moles of NO are formed if 824 g of NH3 react?

a)

4 moles

b)

48.5 moles

c)

97 moles

d)

824 g

2.

This is the equation for the catalytic oxidation of ammonia.

4NH3 + 5O2 --> 4NO + 6H2O. How many grams of water are formed if 2.5 moles of ammonia are oxidized?

a)

.093 g

b)

2 moles

c)

.092592592 moles

d)

5

3.

This is the equation for the catalytic oxidation of ammonia.

4NH3 + 5O2 --> 4NO + 6H2O. How many moles of oxygen are needed to react with 4.6 moles of ammonia?

a)

20 g

b)

5 moles

c)

5.8 moles

d)

11.6 moles

4.

Mercury (II) oxide decomposes into mercury and oxygen gas according to the following balanced equation:

2HgO --> 2Hg + O2

How many moles of mercury (II) oxide are needed to produce 125 g of oxygen?

a)

7.81 moles

b)

8 g

c)

14 moles

d)

250 g

5.

Mercury (II) oxide decomposes into mercury and oxygen gas according to the following balanced equation:

2HgO --> 2Hg + O2

How many grams of oxygen will be produced if 2.3 moles of mercury are produced?

a)

52 g

b)

98.5 g

c)

4 moles

d)

37 g

6.

Mercury (II) oxide decomposes into mercury and oxygen gas according to the following balanced equation:

2HgO --> 2Hg + O2.

How many moles of mercury are produced if 24.5 moles of mercury (II) oxide decompose?

a)

2 moles

b)

24.5 moles

c)

1 mole

d)

12.25 moles