Name: 
 

Mixed Stoichiometry



Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 

Given the reaction:          2 C2H6 + 7 O2 --> 4 CO2 + 6 H2O
What quantity (in moles) of CO2 is produced when 30.0 grams of C2H6 burns completely?
a.
1.0
b.
2.0
c.
4.0
d.
8.0
 

 2. 

What mass of oxygen is produced by the decomposition of 3.0 moles of water?
        2 H2O --> 2 H2 + O2
a.
1.5 g
b.
32 g
c.
36 g
d.
48 g
 

 3. 

Given the reaction:    N2 + 3 H2 --> 2 NH3
If 14 grams of N2 are consumed in the reaction, what mass of H2 is consumed?
a.
6.0 g
b.
2.0 g
c.
3.0 g
d.
4.0 g
 

 4. 

Given the reaction:    N2 + 3 H2 --> 2 NH3
What mass of H2 is needed to produce exactly 1 mole of ammonia (NH3)?
a.
1 g
b.
2 g
c.
3 g
d.
4 g
 

 5. 

Given the reaction:    2 H2 + O2 --> 2 H2O
What mass of oxygen will combine with 3.0 grams of hydrogen to produce water?
a.
1.5 g
b.
0.37 g
c.
6.0 g
d.
24 g
 



 
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