Table of contents

1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

8. Gases, Liquids and Solids

Pressure Units

GOB Chemistry

8. Gases, Liquids and Solids

Pressure Units

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1: minutes

Problem 8b

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

Verified step by step guidance

Understand the relationship between mmHg and torr: By definition, 1 mmHg is equal to 1 torr. This means that the numerical value of pressure in mmHg is the same as the numerical value in torr.

Identify the given pressure: The problem states that the atmospheric pressure is 467 mmHg.

Apply the conversion factor: Since 1 mmHg = 1 torr, the pressure in torr is numerically the same as the pressure in mmHg.

State the result: The pressure in torr is equal to the given pressure in mmHg, which is 467 torr.

Conclude that no further calculations are necessary because the units are directly equivalent.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Atmospheric Pressure

Atmospheric pressure is the force exerted by the weight of air above a given point, typically measured in units such as mmHg, torr, or pascals. At sea level, standard atmospheric pressure is approximately 760 mmHg. As altitude increases, such as on a climb up Mount Whitney, atmospheric pressure decreases due to the reduced weight of the air above.

Unit Conversion

Unit conversion is the process of converting a measurement from one unit to another while maintaining the same quantity. In this context, converting mmHg to torr involves recognizing that 1 mmHg is equivalent to 1 torr, making the conversion straightforward. Understanding unit conversion is essential for accurately interpreting and communicating measurements in different contexts.

Torr

The torr is a unit of pressure defined as 1/760 of standard atmospheric pressure, equivalent to 1 mmHg. It is commonly used in scientific contexts, particularly in fields like meteorology and physics, to express low pressures. Knowing that 467 mmHg is equal to 467 torr simplifies the task of reporting pressure in different units.

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