Table of contents

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1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

7. Gases

Pressure Units

General Chemistry

7. Gases

Pressure Units

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Multiple Choice

A gas at a pressure of 325 torr exerts a force of ________ N on an area of 5.5 m². What is the force exerted by the gas?

29.5 N

18.2 N

15.7 N

23.8 N

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Verified step by step guidance

First, understand the relationship between pressure, force, and area. Pressure is defined as force per unit area. The formula to express this relationship is:

P = \frac{F}{A}

, where

P

is pressure,

F

is force, and

A

is area.

Next, convert the pressure from torr to pascals (Pa), since the standard unit of pressure in the International System of Units (SI) is the pascal. Use the conversion factor:

1 torr = 133.322 Pa

. Multiply the given pressure in torr by this conversion factor.

Now, rearrange the formula to solve for force:

F = P \times A

. Substitute the converted pressure value and the given area into this equation.

Calculate the force using the values obtained from the previous steps. Ensure that the units are consistent, with pressure in pascals and area in square meters, to get the force in newtons (N).

Finally, compare your calculated force with the provided options to identify the correct answer. The correct answer should match the calculated value.