Ch 13 & 14 Worksheet #2: The Gas Laws
1. If a gas is compressed from 4 L to 1 L and the temperature remains constant, what happens to the
pressure?
V₁ = 42
V2= 12
Platm
4atm
P2 = X CULClam= 44tm
2. The gas in a closed container has
a
pressure of 3.00 x 102 KPa at 30°C. What will the pressure be if
the temperature is lowered to -172°C? P33.00x 10kPa 273
T₂ =-172°C +273=
X
30
T=30°C+273- K703
k
P2=X
100kPa
3. Calculate the volume of carbon dioxide gas (in L) at a pressure of 844 kPa if its volume at 536 kPa
is 1.50x 103mL.
(V) (844) (536)\
844
844P-844
V2=536
R=1.50X8
4. A gas with a volume of 4.0 L at 90.0 kPa expands until the pressure drops to 20.0 kPa. What is the
new
volume if the temperature remains constant?
(4.0)(900X200)
360
5. A gas with a volume of 849.0 mL at 150.0°C is heated until its volume is 5.707 L. What is the new
temperature of the gas if the pressure remains constant during the heating process?
6. A sealed cylinder of gas contains nitrogen gas at 1.00 x 10 kPa pressure and a temperature of
20.0°C. The cylinder is left in the sun, and the temperature of the gas increases to 50.0°C. What is
the new pressure in the cylinder?
7. Calculate the number of liters occupied at STP.
a. 2.5 mol N2(g)
c. 0.600 g H2(g)
b. 0.350 mol O2(g)
8. If you put a straw into water, place your finger over the mouth opening, then lift the straw, what
would you see and why?