AP Chemistry
 Ideal Gas Law Worksheet 
1. 
Using the information from STP or SATP conditions determine the
value of the ideal gas constant.

2. 
A sample of 1.00 moles of oxygen at 50^{o}C and 98.6 kPa
occupies what volume?

3. 
A sample of 4.25 moles of hydrogen at 20.0^{o}C occupies
a volume of 25.0 L. Under what pressure is this sample?

4. 
If a steel cylinder with a volume of 1.50 L contains 10.0 moles
of oxygen, under what pressure is the oxygen if the temperature is 27.0^{o}C?

5. 
When the pressure in a certain gas cylinder with a volume of 4.50
L reaches 500 atm, the cylinder is likely to explode. If this cylinder
contains 40.0 moles of argon at 25.0^{o}C, is it on the verge of
exploding? Calculate the pressure in atmospheres.

6. 
At 22.0^{o}C and a pressure of 100.6 kPa, a gas was found
to have a density of 1.14 g/L. Calculate its molecular mass.

7. 
A gas was found to have a density of 1.76 mg/mL at 24.0^{o}C
and a pressure of 98.8 kPa. What is its molecular mass?

8. 
How many millilitres of nitrogen, N_{2}, would have to
be collected at 99.19 kPa and 28^{o}C to have a sample containing
0.015 moles of N_{2}?

9. 
The density of a certain gas at 27.0^{o}C and 98.66 kPa
is 2.53 g/L. Calculate its molecular mass.

10. 
What volume is occupied by 0.25 grams of O_{2} measured
at 25.0^{o}C and 100.66 kPa?

11. 
What is the molecular mass of a gas if 2.82 grams of the gas occupies
3.16 litres at STP?

12. 
A balloon is to be filled with 30.0 kg of helium gas. What volume
can be filled to a pressure of 1.15 atm if the temperature is 20.0^{o}C?

13. 
In a gas thermometer, the pressure needed to fix the volume of
0.20 g of helium at 0.50 L is 113.30 kPa. What is the temperature?

14. 
A gaseous compound has the empirical formula CHCl. At 100^{o}C,
its density at 99.97 kPa is 3.12 x 10^{3} g cm^{3}. What
is the molecular formula of this compound?

15. 
The pressure exerted on a diver by the water increases by about
100 kPa for every 10 m of depth. A scuba diver uses air at the rate of 8 L/min
at a depth of 10 m where the pressure is 200 kPa (100 kPa due to the atmosphere
and 100 kPa due to the water pressure) and the temperature 8^{o}C.
If the diver's 10 L air tank is filled to a ressure of 2.1 X 10^{4}
kPa at a dockside temperature of 32^{o}C, how long can the diver
remain safely submerged?

16. 
You want to send chlorine gas, Cl_{2}, safely from Vancouver
to Kingston. Chlorine gas is very poisonous and corrosive. You have
a 5000 L truck cylinder that will withstand a pressure of 100 atm. The cylinder
will be kept at 2^{o}C throughout the trip. How many moles of chlorine
gas can you safely ship? 