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White Board Races
Ch. 11 Gas LawsReview Game
Question
What is the temperature and pressure for STP?
Answer
273 K (0oC)1 atm (760 mmHg)
Question
Draw the graph that relates pressure and volume for Boyle’s Law.
Answer
Question
You have a temperature reading of 25 K. Convert this to Celsius.
Answer
-248 oC
Question
How many liters (L) does one mole of gas occupy at STP?
Answer
22.4 L
Question
What unit of temperature do we have to use in gas law calculations?
Answer
Kelvin
Question
Is the air pressure on a rainy day higher or lower than the air pressure on a sunny
day?
Answer
Lower
Question
A tank of helium gas at 1.5 atm is what pressure in mmHg?
Answer
1,140 mmHg
Question
The volume of a gas with a pressure of 1.2 atm increases from 1.0 L to 4.0 L. What is
the final pressure of the gas, assuming constant temperature?
Answer
0.3 atm
Question
A gas sample in a closed, expandable container of initial volume 5.00 L was
allowed to warm from 25 °C to 35 °C. What was its new volume?
Answer
5.17 L
Question
A gas contained in a steel tank has a pressure of 1.5 atm at a temperature of
320 K. What will be the gas pressure when the temperature changes to 450 K?
Answer
2.1 atm
Question
At 570. mmHg and 25 °C, a gas sample has a volume of 2270 mL. What is the final
pressure (in mmHg) at a volume of 1250 mL and a temperature of 175 °C ?
Answer
1560 mmHg
Question
What is the volume of 64.0 g of O2 gas at STP?
Answer
44.8 L
Question
A sample contains 8.0 g of oxygen with a volume of 5.0 L. What is the volume after 4.0 g of oxygen is added, if temperature
and pressure do not change?
Answer
7.5 L
Question
What is the density, in grams per liter, of hydrogen gas (H2) at STP?
Answer
0.09 g/L
Question
How many moles of chlorine gas (Cl2) are in a 7.0 L tank if the gas has a pressure of 865
mmHg and a temperature of 24oC?
Answer
0.327 mol
Question
What is the volume, in L, of 1.20 g of carbon monoxide at 8oC if it has a pressure
of 724 mmHg?
Answer
1.04 L
Question
What is the molar mass, in g/mol, of an unknown gas in a 1.5 L container if 0.488 g of the gas has a pressure of 0.0750 atm at
19oC ?
Answer
104 g/mol
Question
If 12.8 g of aluminum reacts with HCl, how many liters of H2 would be formed at 715
mmHg and 19oC?
2Al + 6HCl 3H2 + 2AlCl3
Answer
18.1 L of H2
Question
If a mixture has a total pressure of 1.09 atm and the partial pressure of the first gas is 73 mmHg, what is the partial pressure in
mmHg of the second gas?
Answer
755 mmHg
Question
A 456 mL sample of oxygen gas (O2) is collected over water at a pressure of 744 mmHg and a temperature of 20oC. How
many grams of dry O2 are collected if the vapor pressure of water is 18 mmHg?
Answer
0.579 g of O2