Textbook Question
A tank contains oxygen (O2) at a pressure of 2.00 atm. What is the pressure in the tank in terms of the following units?
d. kPa
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Ch.8 Gases
Timberlake14thChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249
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Table of contents
- Ch.1 Chemistry in Our Lives19
- Ch.2 Chemistry and Measurements80
- Ch.3 Matter and Energy53
- Ch.4 Atoms and Elements58
- Ch.5 Nuclear Chemistry42
- Ch.6 Ionic and Molecular Compounds57
- Ch.7 Chemical Quantities and Reactions38
- Ch.8 Gases30
- Ch.9 Solutions50
- Ch.10 Acids and Bases and Equilibrium64
- Ch.11 Introduction to Organic Chemistry: Hydrocarbons77
- Ch.12 Alcohols, Thiols, Ethers, Aldehydes, and Ketones82
- Ch.13 Carbohydrates54
- Ch.14 Carboxylic Acids, Esters, Amines, and Amides91
- Ch.15 Lipids61
- Ch.16 Amino Acids, Proteins, and Enzymes84
- Ch.17 Nucleic Acids and Protein Synthesis86
- Ch.18 Metabolic Pathways and ATP Production73
Timberlake14thChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249Not the one you use?Change textbook
Chapter 8, Problem 23a
Use the words inspiration and expiration to describe the part of the breathing cycle that occurs as a result of each of the following:
a. The diaphragm contracts.
Verified step by step guidance1
Step 1: Understand the terms 'inspiration' and 'expiration'. Inspiration refers to the process of inhaling air into the lungs, while expiration refers to the process of exhaling air out of the lungs.
Step 2: Recall the role of the diaphragm in breathing. The diaphragm is a dome-shaped muscle located below the lungs that plays a key role in the breathing process.
Step 3: Analyze what happens when the diaphragm contracts. When the diaphragm contracts, it moves downward, increasing the volume of the thoracic cavity (the space where the lungs are located).
Step 4: Relate the increase in thoracic cavity volume to air movement. As the thoracic cavity volume increases, the pressure inside the lungs decreases (based on Boyle's Law: pressure and volume are inversely related). This pressure drop causes air to flow into the lungs.
Step 5: Conclude that the contraction of the diaphragm is associated with inspiration, as it facilitates the intake of air into the lungs.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Diaphragm Function
The diaphragm is a dome-shaped muscle located at the base of the thoracic cavity. When it contracts, it flattens and moves downward, increasing the volume of the thoracic cavity. This action creates a negative pressure that draws air into the lungs, facilitating the process of inspiration.
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Inspiration
Inspiration is the phase of the breathing cycle where air is drawn into the lungs. It occurs when the diaphragm contracts and the intercostal muscles expand the rib cage, leading to a decrease in internal pressure compared to the external atmosphere. This pressure difference allows air to flow into the lungs, supplying oxygen to the body.
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Expiration
Expiration is the phase of the breathing cycle where air is expelled from the lungs. It typically occurs when the diaphragm relaxes and returns to its dome shape, decreasing the thoracic cavity's volume. This increase in internal pressure forces air out of the lungs, removing carbon dioxide and other gases from the body.
Related Practice
Textbook Question
On a climb up Mount Whitney, the atmospheric pressure drops to 467 mmHg. What is the pressure in terms of the following units?
b. torr
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Textbook Question
On a climb up Mount Whitney, the atmospheric pressure drops to 467 mmHg. What is the pressure in terms of the following units?
d. Pa
830
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Textbook Question
Use the words inspiration and expiration to describe the part of the breathing cycle that occurs as a result of each of the following:
c. The pressure within the lungs is higher than that of the atmosphere.
1472
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Textbook Question
A solution containing 80. g of NaNO3 in 75 g of H2O at 50 °C is cooled to 20 °C. b. How many grams of solid NaNO3 crystallized after cooling?
29
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Textbook Question
A gas sample has a volume of 0.256 L with an unknown temperature. The same gas has a volume of 0.198 L when the temperature is 32 °C, with no change in the pressure or amount of gas. What was the initial temperature, in degrees Celsius, of the gas?
1055
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