Chemistry Ch14&15 Exam

92 Questions | By Bakerph1 | Updated: Mar 21, 2022 | Attempts: 428

Questions

Settings

Create your own Quiz

Questions and Answers

1.

A gas is confined in a steel tank with a volume of 6.982 L. At 20.20°C, the gas exerts a pressure of 8.532 atm. After heating the tank, the pressure of the gas increases to 10.406 atm. What is the temperature of the heated gas?
- A.
  
  –32.60°C
- B.
  
  24.63°C
- C.
  
  84.59°C
- D.
  
  92.64°C
2.

How many moles of helium gas are contained in a 4.0-L flask at STP?
- A.
  
  0.045 mol
- B.
  
  0.089 mol
- C.
  
  0.17 mol
- D.
  
  89 mol
3.

A steel tank with a volume of 9.583 L contains N₂ gas under a pressure of 4.972 atm at 31.8 °C. Calculate the number of moles of N₂ in the tank
- A.
  
  0.002 mol
- B.
  
  0.018 mol
- C.
  
  0.525 mol
- D.
  
  1.90 mol
4.

According to Gay-Lussac’s law:
- A.
  
  Pressure is inversely proportional to volume at constant temperature.
- B.
  
  Pressure is directly proportional to temperature at constant volume
- C.
  
  Volume is inversely proportional to temperature at constant pressure
- D.
  
  Volume is directly proportional to temperature at constant pressure.
5.

What volume of oxygen is needed to react with solid sulfur to form 6.20 L of sulfur dioxide?
- A.
  
  6.20 L
- B.
  
  7.20 L
- C.
  
  12.4 L
- D.
  
  99.2 L
6.

How many moles of steam are produced at 2.00 atm and 202.0°C by the complete combustion of 12.50 L of methane gas?
- A.
  
  0.001 mol
- B.
  
  0.012 mol
- C.
  
  0.640 mol
- D.
  
  1.28 mol
7.

Four liters of gas at atmospheric pressure is compressed into a 0.85 L gas cylinder. What is the pressure of the compressed gas if its temperature remains constant?
- A.
  
  0.15 atm
- B.
  
  0.21 atm
- C.
  
  3.4 atm
- D.
  
  4.7 atm
8.

When a bicycle reaches the top of a hill with a tire volume of 0.80 L, the atmospheric pressure is 9.0 atm. What is the maximum volume of air that can be filled in the tire just before it bursts?
- A.
  
  0.088 L
- B.
  
  1.2 L
- C.
  
  8.9 L
- D.
  
  11 L
9.

When a milkshake is taken in through a straw at a pressure of 0.071 atm, the straw contains 5.0 mL of liquid. How much liquid is consumed at 0.092 atm?
- A.
  
  0.10 mL
- B.
  
  3.9 mL
- C.
  
  6.3 mL
- D.
  
  7.8 mL
10.

In a hospital, oxygen is administered to patients at 3.0 atm in a hyperbaric oxygen chamber. Oxygen gas, measuring 600.0 L, is compressed in a cylinder at 160.0 atm. What volume of oxygen can a cylinder supply at the given pressure?
- A.
  
  11 L
- B.
  
  32 L
- C.
  
  11 x 10³ L
- D.
  
  32 x 10³ L
11.

A 2.50 L balloon is filled with water at 2.27 atm. If the balloon is squeezed into a 0.80 L beaker and does NOT burst, what is the pressure of water in the balloon?
- A.
  
  0.72 atm
- B.
  
  0.88 atm
- C.
  
  7.1 atm
- D.
  
  8.8 atm
12.

A balloon is filled with 3.50 L of water at 24.0°C and 2.27 atm. If the balloon is placed outdoors on a hot day at a temperature of 34.0°C, what is the volume of the balloon at constant pressure?
- A.
  
  2.47 L
- B.
  
  3.38 L
- C.
  
  3.61 L
- D.
  
  8.19 L
13.

The volume of a sample of helium is 4.50 mL at 20.0°C and 203.0 kPa. What will its volume be at 10.0°C and 203.0 kPa?
- A.
  
  2.25mL
- B.
  
  3.78 mL
- C.
  
  4.34 mL
- D.
  
  6.85 mL
14.

The volume of a 24.0-g sample of methane gas is 22.8 L at 40.0°C and 4.00 atm. What will its volume be at 68.0°C and 4.00 atm?
- A.
  
  20.9 L
- B.
  
  24.8 L
- C.
  
  38.7 L
- D.
  
  40.8 L
15.

A 40.0-L sample of fluorine is heated from 90.0°C to 186.0°C. What volume will the sample occupy at the higher temperature?
- A.
  
  19.3 L
- B.
  
  31.6 L
- C.
  
  50.5 L
- D.
  
  82.6 L
16.

A welding torch requires 3200 L of ethylene gas at 3.00 atm. What will be the pressure of the gas if ethylene is supplied by a 250.0-L tank?
- A.
  
  0.231 atm
- B.
  
  2.34 atm
- C.
  
  38.4 atm
- D.
  
  45.4 atm
17.

The volume of a gas is 1.50 L at 30.0°C and 1.00 atm. What volume will the gas occupy if the temperature is raised to 134.0°C at constant pressure?
- A.
  
  0.331 L
- B.
  
  1.11 L
- C.
  
  2.01 L
- D.
  
  6.70 L
18.

A sample of carbon dioxide occupies a 2.54 dm³ container at STP. What is the volume of the gas at a pressure of 150.0 kPa and a temperature of 26.0°C?
- A.
  
  0.180 dm³
- B.
  
  1.88 dm³
- C.
  
  2.24 dm³
- D.
  
  4.65 dm³
19.

A diver finds the best corals at a depth of approximately 10.0 m. The diver’s lung capacity is 2.40 L. The air temperature is 32.0°C and the pressure is 101.30 kPa. What is the volume of the diver’s lungs at 10.00 m, at a temperature of 21.0°C, and a pressure of 141.20 kPa?
- A.
  
  1.12 L
- B.
  
  1.66 L
- C.
  
  1.78 L
- D.
  
  4.86 L
20.

One liter of a gas has a pressure of 150.00 kPa at 25.0°C. If the pressure increases to 600.0 kPa and the temperature to 100.0°C, what would be the new volume of the gas?
- A.
  
  0.200 L
- B.
  
  0.312 L
- C.
  
  1.00 L
- D.
  
  2.90 L
21.

The variable that stays constant when using the combined gas law is
- A.
  
  Amount of gas
- B.
  
  Pressure.
- C.
  
  Temperature.
- D.
  
  Volume.
22.

The equation for the combined gas law can be used instead of which of the following equations?
- A.
  
  Boyle’s law
- B.
  
  Charles’s law
- C.
  
  Gay-Lussac’s law
- D.
  
  All of these
23.

Which of the following expresses Avogadro’s principle?
- A.
  
  Equal volumes of gases at the same temperature and pressure contain equal numbers of particles.
- B.
  
  One mole of any gas will occupy a certain volume at STP.
- C.
  
  STP stands for standard temperature and pressure.
- D.
  
  The molar volume of a gas is the volume that one mole occupies at STP.
24.

What information is NOT given by the coefficients in a balanced chemical equation?
- A.
  
  The mass ratios of reactants and products
- B.
  
  The mole ratios of reactants and products
- C.
  
  The ratios of number of molecules of reactants and products
- D.
  
  The volume ratios of gaseous reactants and products d. the volume ratios of gaseous reactants and products the volume ratios of gaseous reactants and products
25.

What volume will one mole of a gas occupy under standard temperature and pressure?
- A.
  
  1 L
- B.
  
  22.4 L
- C.
  
  273 L
- D.
  
  293 L