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Gas Stoichiometry

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

 1. 

Given the reaction: 2 PbO --> 2 Pb + O2
What is the total volume of O2, measured at STP, produced when 1.00 mole of PbO decomposes?
a.
44.8 L
b.
22.4 L
c.
11.2 L
d.
5.60 L
 

 2. 

Given the balanced equation: Ca + 2 H2O --> Ca(OH)2 + H2
When 80.2 grams of Ca react completely with the water, what is the total volume, at STP, of H2 produced?
a.
44.8 L
b.
22.4 L
c.
2.00 L
d.
1.00 L
 

 3. 

Given the reaction at STP:     2 KClO3 (s)  -->  2 KCl (s) + 3 O2 (g)
What mass of KClO3 (s) is required to produce 32.0 liters of O2 (g)?
a.
0.952 g
b.
21.3 g
c.
117 g
d.
263 g
 

 4. 

Given the balanced equation: C3H8 + 5 O2 --> 3 CO2 + 4 H2O
What is the total number of liters of CO2 produced when 20.0 liters of O2 are completely consumed?
a.
12.0 L
b.
22.4 L
c.
3.00 L
d.
5.00 L
 



 
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