NEW
Font size
S
M
L
XL
WorksheetsAP CHEM FINAL
Total questions: 20
Worksheet time: 13mins
Name
Class
Date
1.
Which of the following gases is expected to behave most ideally at a given temperature and pressure?
a)
H2O
b)
NH3
c)
Xe
d)
He
2.
At STP, what is the Volume of a gas
a)
It is depends on the Gas
b)
Spider-man
c)
22.4 L/mol
d)
24.2
3.
How many moles of hydrogen do you have at the pressure of 1.0 atm, and a volume of 3.0 L at 27 °C
a)
1.4 mol
b)
0.122 mol
c)
0.12 mol
d)
1.35 mol
4.
A 1.42 mol sample of O2 is confined in a 34.7 L container at 25.1 C.
If 1.42 mol of H2 gas is added while the volume and temerature are constant, the average kinetic energy of the total system will…
If 1.42 mol of H2 gas is added while the volume and temerature are constant, the average kinetic energy of the total system will…
a)
Remain the Same
b)
Decrease
c)
Not enough Information
d)
Increase
5.
A 1.39 mol sample of He gas is confined in a 33.1 liter container at 17.0 °C.
If 1.39 mol of Kr is substituted for the 1.39 mol of He, holding the volume and temperature constant, the average molecular speed will
If 1.39 mol of Kr is substituted for the 1.39 mol of He, holding the volume and temperature constant, the average molecular speed will
a)
Not enough information
b)
Decrease
c)
Remain the Same
d)
Increase
6.
If the temperature is raised to 47.4 °C holding the volume constant, the average molecular speed will
a)
Increase
b)
Not enough information
c)
Decrease
d)
Remain the Same
7.
Calculate the pressure exerted by 0.5300 mole of NH4 in a 1.000-L container at 25.00°C.
a)
27.87 atm
b)
12.96 atm
c)
6.48 atm
d)
6.5 atm
8.
At STP, 0.20 mole of nitrogen gas, N2, has a volume of
a)
1.12 L
b)
2.24 L
c)
4.48 L
d)
22.4 L
9.
A fixed volume of oxygen gas exerts a pressure of 1.00 atm at a temperature of 25°C. What is the pressure of the gas when it is heated to 100°C?
a)
25 atm
b)
1.25 atm
c)
22.5 atm
d)
4 atm
10.
A sample of gas is heated from 35°C to 70°C. Which statement correctly describes what happens to the volume?
a)
The volume increases by a factor of less than 2
b)
The volume increases by a factor of 2
c)
The volume increases by a factor of more than 2
d)
The volume decreases by a factor of 2
11.
A certain mass of neon gas is contained in a rigid steel container. The same mass of helium gas is added to this container. Which of the following best describes what happens? Assume the temperature is constant.
a)
The pressure in the container doubles.
b)
The pressure in the container increases but does not double.
c)
The pressure in the container more than doubles.
d)
The pressure in the container does not change.
12.
Which of the following statements is true concerning real gases?
a)
The observed pressure will be less than the ideal pressure, and the volume available for the gas particles is less than the volume of the container.
b)
The observed pressure will be less than the ideal pressure, and the volume available for the gas particles is greater than the volume of the container.
c)
The observed pressure will be greater than the ideal pressure, and the volume available for the gas particles is greater than the volume of the container.
d)
The observed pressure will be greater than the ideal pressure, and the volume available for the gas particles is less than the volume of the container.
13.
The temperature of a sample of an ideal gas confined in a 2.0 L container was raised from 27°C to 77°C. If the initial pressure of the gas was 1,200 mmHg, what was the final pressure of the gas?
a)
300mmHg
b)
600mmHg
c)
1,400 mmHg
d)
2,400 mmHg
14.
A mixture of helium and neon gases has a total pressure of 1.2 atm. If the mixture contains twice as many moles of helium as neon, what is the partial pressure due to neon?
a)
0.2 atm
b)
0.3 atm
c)
0.4 atm
d)
0.8 atm
15.
Nitrogen gas was collected over water at 25°C. If the vapor pressure of water at 25°C is 23 mmHg, and the total pressure in the container is measured at 781 mmHg, what is the partial pressure of the nitrogen?
a)
23 mmhg
b)
758 mmhg
c)
46 mmhg
d)
735 mmhg
16.
A gaseous mixture at a constant temperature contains O2, CO2, and He. Which of the following lists the three gases in order of increasing average molecular speeds?
a)
O2, CO2, He
b)
CO2, O2, He
c)
He, O2, CO2
d)
O2, He, CO2
17.
Which of the following equations is equal to the density of 1 mole of helium gas at STP
a)
1/22.4 g/L
b)
2/22.4 g/L
c)
1/4 g/L
d)
4/22.4 g/L
18.
An ideal gas is contained in a 5.0 liter chamber at a temperature of 37°C. If the gas exerts a pressure of 2.0 atm on the walls of the
chamber, which of the following expressions is equal to the number of moles of the gas? The gas constant, R, is 0.08 (L-atm)/(mol-K).
chamber, which of the following expressions is equal to the number of moles of the gas? The gas constant, R, is 0.08 (L-atm)/(mol-K).
a)
(2.0)(5.0)/(0.08)(310) moles
b)
(2.0)(0.08)/(5.0)(37) moles
c)
(2.0)(0.08)/(5.0)(310) moles
d)
(2.0)(310)/(0.08)(5.0) moles
19.
A balloon occupies a volume of 1.0 liter when it contains 0.16 grams of helium at 37°C and 1 atm pressure. If helium is added to the balloon until it contains 0.80 grams while pressure and temperature are kept constant, what will be the new volume of the balloon?
a)
4 L
b)
1 L
c)
2 L
d)
5 L
20.
Which of the following gases would have an effusion rate that is a third of the effusion rate of H2
a)
O2
b)
N2
c)
He
d)
H2O
Reset
