Gases and Solutions Review
Answer each question. SHOW ALL WORK. Find your answer in the answer bank below to check. Answers
can only be used once or not at all.
1. When a bicycle reaches the top of a hill with a tire volume of 0.80 L, the atmospheric pressure is
9.0 atm. What is the maximum volume of air that can be filled in the tire just before it bursts?
2. A gas in a 325 mL container has a pressure of 695 torr at 19°C. There are __________ mol of gas
in the flask.
3. A 40.0-L sample of fluorine is heated from 90.0°C to 186.0°C. What volume will the sample
occupy at the higher temperature?
4. Gas is confined in a metal tank in the figure. At 20.20°C, the gas exerts a pressure of 8.532 atm.
After heating the tank, the pressure of the gas increases to 10.406 atm. What is the temperature
of the heated gas?
5. The volume of a sample of helium is 4.50 mL at 20.0°C and 203.0 kPa. What will its volume be at
10.0°C and 203.0 kPa?
6. How many moles of helium gas are contained in a 4.0-L flask at STP?
7. The pressure of a sample of CH4 gas (6.022 g) in a 30.0 L vessel at 402 K is __________ atm.
8. What mass of solid sulfur is needed to form 3.45 L of sulfur dioxide?
S(s) + O2(g) ® SO2(g)
Gases and Solutions Review
9.
A sample of potassium
nitrate (49.0 g) is dissolved in 101
g of water at 100°C, with
precautions taken to avoid
evaporation of any water. The
solution is cooled to 30.0°C and
no precipitate is observed. This
solution is __________.
10.
Determine how many
grams of KClO3 needs to dissolve
in 100 grams of water in order to
have a saturated solution at 80°C.
11.
Calculate the molarity
of a solution containing 5.7 mol of sodium carbonate(Na2CO3) dissolved in 0.5 L of water.
12. How many grams of solute is present in 100.5 mL of 0.282 M of C6H12O6?
13. The concentration (M) of HCl in a solution prepared by dissolving 5.5 g of HCl in 253 mLof C2H6O
is __________ M
14. What volume, in milliliters, of calcium chloride stock solution (2 M) would you use to make 0.50
L of 0.300 M of calcium chloride solution?
15. What is the molarity of 200 mL of solution in which 299.79grams of sodium bromide is
dissolved?
75
4.34
0.58
1.48 x 10-2
Saturated
12.4
0.088
0.413
38
Unsaturated
4.94
92.64°C
11.4
50.5
Supersaturated
0.17
0.01
1.2
5.10
Unknown
0.045
1.24 x 10-2
6.85
84.59°C
9.86
82.6
28.3
48
0.93
0.75
15
4.0