TEST REVIEW
--
GASES TEST NUMBER TWO
DIRECTIONS: On separate pages, solve the following problems. Show
work and steps. Then write the answers in the appropriate boxes and
see if you can crack the code…
A. From the other side, count up the number of “O2” answers.
number in the box designated “A.”
Write the
B. Through the process of photosynthesis, an aquatic plant produced
oxygen, which was then collected over water. If 880.1 ml was acquired at
.9840 atm and 30.0o C, determine the mass (in grams) of glucose that was
produced. Write the answer in the box designated “B.”
C. 510 ml of an unknown gas was collected over water at 27o C and 765.9 mm
Hg. The mass of this gas was .768 g. Determine the molecular mass of
this gas. Now, given that this element is diatomic, determine its atomic
mass. Write the answer in the box designated “C.”
D. 3.69 g Al was reacted with excess hydrochloric acid at 99.42 kPa and 18o
C. Determine the volume of dry hydrogen that is expected. Write the
answer in the box designated “D.”
E. Determine the density of sulfur trioxide at 51o C and 6.32 atm.
the answer here in the box designated “E.”
A
B
C
D
E
Now, take the NUMBER from each box and round it to a whole number.
these whole numbers in the boxes below:
A
B
What you have is a code.
C
D
Write
Write
E
Can you break it? _____________________________________
TEST REVIEW, PAGE TWO:
following: O2, H2, CO2
Indicate which gas is described by each of the
___ 1. flammable
___ 2. supports combustion
___ 3. needed for photosynthesis
___ 4. a byproduct of photosynthesis
___ 5. produced by reaction:
CaCO3 + HCl -------> ______________
___ 6. Most dense of these three gases
___ 7. Least dense of these three
___ 8. produced by reaction:
Ca + HCl -------> ______________
___ 9. Most stable of these three gases
___ 10. Produced by combustion of hydrocarbons (such as CH4, C3H8, etc.)
___ 11. Produced by (catalyzed) decomposition of hydrogen peroxide
___ 12. Sublimes under normal conditions
___ 13. The most common element in the universe
___ 14. Causes lime water to become cloudy
___ 15. NOT useful for propelling rockets into outer space
___ 16. Reacts with water to form an acid
___ 17. 21% of the Earth's atmosphere
___ 18. Used to leaven bread, cakes, etc.
___ 19. Used to remove impurities from molten steel
___ 20. An allotrope of ozone
___ 21. As a positive ion, part of all aqueous acids
___ 22. In creased atmospheric levels cause global warming
___ 23. The most common element in the earth’s crust
___ 24. Proposed for use as a vehicle fuel
___ 25. Useful for fighting fires
___ 26. Needed for making pop
ANSWERS
TEST REVIEW
--
GASES TEST NUMBER TWO
DIRECTIONS: On separate pages, solve the following problems. Show
work and steps. Then write the answers in the appropriate boxes and
see if you can crack the code…
A. From the other side, count up the number of “O2” answers.
number in the box designated “A.”
Write the
B. Through the process of photosynthesis, an aquatic plant produced
oxygen, which was then collected over water. If 880.1 ml was acquired at
.9840 atm and 30.0o C, determine the mass (in grams) of glucose that was
produced. Write the answer in the box designated “B.”
C. 510 ml of an unknown gas was collected over water at 27o C and 765.9 mm
Hg. The mass of this gas was .768 g. Determine the molecular mass of
this gas. Now, given that this element is diatomic, determine its atomic
mass. Write the answer in the box designated “C.”
D. 3.69 g Al was reacted with excess hydrochloric acid at 99.42 kPa and 18o
C. Determine the volume of dry hydrogen that is expected. Write the
answer in the box designated “D.”
E. Determine the density of sulfur trioxide at 51o C and 6.32 atm.
the answer here in the box designated “E.”
A
B
C
D
E
7
1.0g
glucose
19 g/mol
5.0L
19 g/L
Now, take the NUMBER from each box and round it to a whole number.
these whole numbers in the boxes below:
A
B
What you have is a code.
C
D
Write
Write
E
Can you break it? _____________________________________
ANSWERS:
Indicate which gas is described by each of the following:
O2, H2,
CO2
_ H2__ 1. flammable
_ O2__ 2. supports combustion
_ CO2__ 3. needed for photosynthesis
_ O2__ 4. a byproduct of photosynthesis
__ CO2_ 5. produced by reaction:
CaCO3 + HCl -------> ______________
_ CO2__ 6. Most dense of these three gases
_ H2__ 7. Least dense of these three
_ H2__ 8. produced by reaction:
Ca + HCl -------> ______________
_ CO2__ 9. Most stable of these three gases
_ CO2__ 10. Produced by combustion of hydrocarbons (such as CH4, C3H8, etc.)
_ O2__ 11. Produced by (catalyzed) decomposition of hydrogen peroxide
_ CO2__ 12. Sublimes under normal conditions
_ H2__ 13. The most common element in the universe
_ CO2__ 14. Causes lime water to become cloudy
_ CO2__ 15. NOT useful for propelling rockets into outer space
_ CO2__ 16. Reacts with water to form an acid
_ O2__ 17. 21% of the Earth's atmosphere
_ CO2__ 18. Used to leaven bread, cakes, etc.
_ O2__ 19. Used to remove impurities from molten steel
_ O2__ 20. An allotrope of ozone
_ H2__ 21. As a positive ion, part of all aqueous acids
_ CO2__ 22. Increased atmospheric levels cause global warming
_ O2__ 23. The most common element in the earth’s crust
_ H2__ 24. Proposed for use as a vehicle fuel
_ CO2__ 25. Useful for fighting fires
_ CO2__ 26. Needed for making pop