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 + O_{2}
What is the total volume of
O_{2}, 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 H_{2}O > Ca(OH)_{2} +
H_{2}
When 80.2 grams of Ca react completely with the water, what is the total volume, at
STP, of H_{2} produced? a.  44.8 L  b.  22.4
L  c.  2.00 L  d.  1.00
L         


3.

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


4.

Given the balanced
equation: C_{3}H_{8} + 5 O_{2} > 3
CO_{2} + 4 H_{2}O
What is the total number of
liters of CO_{2} produced when 20.0 liters of O_{2} are completely consumed?
a.  12.0 L  b.  22.4 L  c.  3.00
L  d.  5.00 L         
