Chemistry 100
Gas Laws
The following problems and exercises are for practice.
1.
Convert 744 torr to atmospheres and to kPa.
2.
How many torr is equivalent to 1.25 atm?
3.
Convert 995.63 kPa to atm.
4.
Convert 0.564 atm to torr and kPa.
5.
What is 20.5C to Kelvin
6.
619.5 K is what temperature in Celsius?
7.
What is the freezing temperature of water in Kelvin?
8.
Is it possible to have a negative temperature in Kelvin?
9.
Convert 357 ml to liters.
10.
How many milliliters in 0.0487 L?
11.
What is the conversion from liters to milliliters?
12.
How many moles are in 1.125 grams of carbon dioxide?
13.
How many moles are in 72.56 grams of sulfur hexafluoride?
14.
How many grams are needed to provide 0.865 moles of propane, C3H8?
15.
If an amount of gas at 0.978 atm and 0.456 L is compressed at a
constant temperature to a volume of 0.250 L, what is the pressure?
16.
What volume would a hydrogen balloon be at 725 torr, if the temperature is
constant and it had a volume of 1.527 L at 759 torr?
17.
An aerosol can has a pressure of 1.30 atm at 25C, what is the pressure at
200C?
18.
A diver set a tanks pressure to 770.25 torr at 20C, in the water the pressure
changes to 745.6 torr what is the temperature of the tank in the water?
19.
A hot air balloon has a volume of 1600 L at 180C, what is the volume if
the gas is heated to 220C?
20.
At 293.6 K a gas has a volume of 356.3 ml what is the temperature if the
volume changes to 405.8 ml?
21.
If a gas has a volume of 253.6 ml at 23C and 747.7 torr what is the volume
of the gas at 65.8C and 759.6 torr?
22.
A sample of an unknown gas at 298.15 K has a volume of 3.89 L at 0.956
atm. What is the pressure of the gas, if the temperature drops to 260 K and the
volume changes to 4.00 L?
23.
The standard temperature and pressure for gases is 0C and 1.00 atm. If the
volume of a gas is 22.4 L under these standard conditions, what would the
temperature be when the volume becomes 20.5 L and the pressure is 0.856
atm?
24.
Given a 526 ml sample of a gas at 22.7C and 748.9 torr, what is the
volume if the temperature is 357 K and the pressure 1.18 atm?
25.
What is the value for the following relationships?
PV
R
NT
At standard conditions:
V = 22.4 L; T = 0C; N = 1.00 moles and P = 1.00 atm
At nonstandard conditions:
V = 1.50 L; T = 288 K; N = 0.0891 mol; P = 1.403 atm
Chemistry 100
Gas Laws
Name __________________
Date __________________
Section ________________
Answer Sheet
Number
Answer
Number
Answer
1
0.979 atm
13
0.497 mol SF6
1.b
99.17 kPa
14
38.1 g C3H8
2
950 torr
15
1.78 atm
3
9.83 atm
16
1.60 L
4
428.6 torr
17
2.06 atm
4.b
57.1 kPa
18
283.77 K or 10.6C
5
293.65 K
19
1740 L
6
346.4C
20
334.4 K
7
273.15 K
21
285.7 ml
8
No
22
0.811 atm
9
0.357 L
23
213.98 K or –59.2C
10
24
530 ml
11
48.7 ml
1.0 L = 1000 ml
25
0.0820 atm L / mol K
12
0.026 mol CO2
25
0.0820 atm L / mol K