© copyright pearson prentice hall slide 1 of 45 14.2 the gas laws this hot air balloon was designed...
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14.2 The Gas Laws
This hot air balloon was designed to carry a passenger around the world. You will study some laws that will allow you to predict gas behavior under specific conditions, such as in a hot air balloon.
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The Gas Laws >
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14.2 Boyle’s Law: Pressure and Volume
Boyle’s Law: Pressure and Volume
How are the pressure, volume, and temperature of a gas related?
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The Gas Laws >14.2 Boyle’s Law: Pressure and Volume
If the temperature is constant, as the pressure of a gas increases, the volume decreases.
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The Gas Laws >14.2 Boyle’s Law: Pressure and Volume
Boyle’s law states that for a given mass of gas at constant temperature, the volume of the gas varies inversely with pressure.
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The Gas Laws >14.2 Boyle’s Law: Pressure and Volume
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The Gas Laws > Boyle’s Law: Pressure and Volume
Simulation 15
Examine the relationship between gas, volume and pressure.
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SAMPLE PROBLEM
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14.1
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SAMPLE PROBLEM
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14.1
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SAMPLE PROBLEM
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14.1
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SAMPLE PROBLEM
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14.1
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Practice Problems for Sample Problem 14.1
Problem Solving 14.8
Solve Problem 8 with the help of an interactive guided tutorial.
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The Gas Laws >14.2 Charles’s Law: Temperature and Volume
Charles’s Law: Temperature and Volume
As the temperature of an enclosed gas increases, the volume increases, if the pressure is constant.
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The Gas Laws >14.2 Charles’s Law: Temperature and Volume
As the temperature of the water increases, the volume of the balloon increases.
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The Gas Laws >14.2 Charles’s Law: Temperature and Volume
Charles’s law states that the volume of a fixed mass of gas is directly proportional to its Kelvin temperature if the pressure is kept constant.
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The Gas Laws >14.2 Charles’s Law: Temperature and Volume
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The Gas Laws > Charles’s Law: Temperature and Volume
Simulation 16
Examine the relationship between gas volume and temperature.
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SAMPLE PROBLEM
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14.2
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SAMPLE PROBLEM
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14.2
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SAMPLE PROBLEM
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14.2
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SAMPLE PROBLEM
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14.2
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Practice Problems for Sample Problem 14.2
Problem Solving 14.10
Solve Problem 10 with the help of an interactive guided tutorial.
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The Gas Laws >14.2 Gay-Lussac’s Law: Pressure and Temperature
Gay-Lussac’s Law: Pressure and Temperature
As the temperature of an enclosed gas increases, the pressure increases, if the volume is constant.
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The Gas Laws >14.2 Gay-Lussac’s Law: Pressure and Temperature
When a gas is heated at constant volume, the pressure increases.
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The Gas Laws >14.2 Gay-Lussac’s Law: Pressure and Temperature
Gay-Lussac’s law states that the pressure of a gas is directly proportional to the Kelvin temperature if the volume remains constant.
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The Gas Laws >14.2 Gay-Lussac’s Law: Pressure and Temperature
A pressure cooker demonstrates Gay-Lussac’s Law.
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The Gas Laws > Gay-Lussac’s Law: Pressure and Temperature
Simulation 17
Examine the relationship between gas pressure and temperature.
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SAMPLE PROBLEM
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14.3
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SAMPLE PROBLEM
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14.3
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SAMPLE PROBLEM
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14.3
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SAMPLE PROBLEM
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14.3
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Practice Problems for Sample Problem 14.3
Problem Solving 14.12 Solve Problem 12 with the help of an interactive guided tutorial.
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The Gas Laws >
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14.2 The Combined Gas Law
The Combined Gas Law
When is the combined gas law used to solve problems?
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The Gas Laws >14.2 The Combined Gas Law
The combined gas law describes the relationship among the pressure, temperature, and volume of an enclosed gas.
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The Gas Laws >14.2 The Combined Gas Law
The combined gas law allows you to do calculations for situations in which only the amount of gas is constant.
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SAMPLE PROBLEM
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14.4
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SAMPLE PROBLEM
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14.4
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SAMPLE PROBLEM
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14.4
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SAMPLE PROBLEM
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14.4
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Practice Problems for Sample Problem 14.4
Problem Solving 14.14
Solve Problem 14 with the help of an interactive guided tutorial.
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The Gas Laws >14.2 The Combined Gas Law
Weather balloons carry data-gathering instruments high into Earth’s atmosphere. At an altitude of about 27,000 meters, the balloon bursts.
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Section Quiz
-or-Continue to: Launch:
Assess students’ understanding of the concepts in Section
14.2 Section Quiz.
14.2.
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14.2 Section Quiz.
1. If the volume of a gas in a container were reduced to one fifth the original volume at constant temperature, the pressure of the gas in the new volume would be
a. one and one fifth times the original pressure.
b. one fifth of the original pressure.
c. four fifths of the original pressure.
d. five times the original pressure.
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14.2 Section Quiz.
2. A balloon appears slightly smaller when it is moved from the mountains to the seashore at constant temperature. The best gas law to explain this observation would be
a. Gay-Lussacs's Law.
b. Graham's Law.
c. Boyle's Law.
d. Charles's Law.
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14.2 Section Quiz.
3. At 46°C and 89 kPa pressure, a gas occupies a volume of 0.600 L. How many liters will it occupy at 0°C and 20.8 kPa?
a. 0.600 L
b. 2.58 L
c. 0.140 L
d. 2.20 L
END OF SHOW