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WorksheetsGAS LAWS / GAS STOICHIOMETRY REVIEW
Total questions: 15
Worksheet time: 44mins
Name
Class
Date
1.
A gas that has a pressure of 2 atm and a volume of 10 L. What would be the new volume if the pressure was changed to 1 atm?
a)
P1/T1 = P2/T2
b)
P1V1 = P2V2
c)
V1/n1 = V2/n2
d)
PV = nRT
2.
A sample of a gas has a volume of 852 mL at 298 K. What temperature is necessary for the gas to have a volume of 945 mL?
a)
Pt = P1 + P2 + P3 + ...
b)
P1V1 = P2V2
c)
V1/T1 = V2/T2
d)
P1V1/T1 = P2V2/T2
3.
If a nitrogen gas occupies a volume of 500 ml at a pressure of 0.971atm. What volume will the gas occupy at a pressure of 1.50 atm?
a)
P1V1 = P2V2
b)
PV = nRT
c)
P1/T1 = P2/T2
d)
V1/n1 = V2/n2
4.
At constant pressure, a balloon's volume changed from 15L to 45L. If the final temperature was 350K, what was the initial temperature?
a)
2 K
b)
1050 K
c)
117 K
d)
not enough information
5.
Determine the Celsius temperature of 2.49 moles of gas contained in a 1.00-L vessel at a pressure of 143 kPa.
a)
-266 degrees C
b)
-622 degrees C
c)
622 degrees C
d)
266 degrees C
6.
In the ideal gas law, which variable represents the gas constant?
a)
n
b)
R
c)
T
d)
V
7.
Determine the number of moles in a container of gas at STP with a volume of 99.2 L.
a)
2222.08 moles
b)
4.43 moles
c)
22.4 moles
d)
76.8 moles
8.
What about gasses can be measured?
a)
Pressure and Volume
b)
Temperature, Volume, and Pressure
c)
Volume and Temperature
d)
Pressure, Temperature, Volume, and Moles
9.
If the pressure exerted by a gas at 25 degrees C in a volume of 0.044 L is 3.81 atm, how many moles of gas are present?
a)
.002766 mole
b)
.0069 mol
c)
2.766 mol
d)
9.887 mol
10.
At STP, what is pressure in atmospheres?
a)
1 atm
b)
10 atm
c)
0 atm
d)
100 atm
11.
Calculate the volume that a 0.323-mol sample of a gas will occupy at 265 K and a pressure of 0.900 atm.
a)
7.18 L
b)
7.81 L
c)
4.63 L
d)
4.36 L
12.
Determine the Kelvin temperature required for 0.0470 mol of gas to fill a balloon to 1.20 L under .998 atm pressure.
a)
0 K
b)
107 K
c)
207 K
d)
307 K
13.
2Al + 6HCl --> 2AlCl3 + 3H2
Aluminium reacts with hydrochloric acid. How many grams of aluminum are necessary to produce 11 L of hydrogen gas at STP?
a)
13
b)
8.8
c)
0.99
d)
1.0
14.
Mg3N2 + 3H2O ––> 3 MgO + 2NH3
If 10.3 g of magnesium nitride is used, what volume of ammonia gas would be collected at 20˚C and 0.989 atm?
a)
4.9 L NH3
b)
4.96 L NH3
c)
0.261 L NH3
d)
0.26 L NH3
15.
2CO + O2 −-> 2CO2
How many liters of carbon monoxide at 25.0oC and 8.56 mmHg are needed to react with 12.30 L of oxygen gas at STP?
a)
3.14 L
b)
318 L
c)
2390 L
d)
200 L
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