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  1. Oct 10, 2023 · The effect of molar mass on these speeds is dramatic, as illustrated in Figure 10.7.7 for some common gases. Because all gases have the same average kinetic energy, according to the Boltzmann distribution, molecules with lower masses, such as hydrogen and helium, have a wider distribution of speeds.

    • Chapter 14

      Chapter 14.1: Factors that Affect Reaction Rates; Chapter...

  2. Thus, the pressure of a gas becomes larger as the volume of the gas becomes smaller. Charles' Law (V T) The average kinetic energy of the particles in a gas is proportional to the temperature of the gas. Because the mass of these particles is constant, the particles must move faster as the gas becomes warmer.

  3. Jun 25, 2023 · The O 2 molecules in air at room temperature move about 50 percent faster than jet planes, and H 2 molecules are nearly 4 times speedier yet. Of course an O 2 molecule would take a lot longer to get from New York to Chicago than a jet would. Gas molecules never go far in a straight line before colliding with other molecules.

  4. Bernoulli's principle, sometimes known as Bernoulli's equation, holds that for fluids in an ideal state, pressure and density are inversely related: in other words, a slow-moving fluid exerts more pressure than a fast-moving fluid. Since "fluid" in this context applies equally to liquids and gases, the principle has as many applications with ...

    • Laminar and Turbulent Flow
    • Boundary Layer
    • Drag

    When you empty water from a plastic bottle, you've probably noticed you can do it in two very differentways. If you tip the bottle at a shallow angle, the water comesout very smoothly; air moves past it, in the opposite direction,filling the bottle with "emptiness." If you tip the bottle more,or hold it vertically, the water comes out noisily, in j...

    The speed at which a fluid flows past an object varies according to how far from the object you are. Ifyou're sitting in a parked car and a gale-force wind is howling pastyou at 200km/h (125mph), you might think the difference in speed between theair and the car is 200km/h—and it is! But there's not a sudden,drastic discontinuity between the statio...

    Photo: The faster you go, the harder you have to work against the air. Air resistance doesn't really matter when you walk, because you're not traveling fast enough. But if you cycle, you need to think about aerodynamics much more and adopt a streamlined posture that disturbs the airflow as little as possible. Like this rider, you might want to get ...

  5. The particles in a gas are moving very quickly in random directions. The speeds of the particles vary but, on average, they move quicker than they do in liquids and solids. This means that it does ...

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  7. Feb 16, 2022 · Gas is a state of matter that has no fixed shape and no fixed volume. Gases have a lower density than other states of matter, such as solids and liquids. There is a great deal of empty space ...

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