College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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velocity light = 1213m/s
velocity heavy = 453m/s
temperature= 300k
solve for both using the middle equation Vav= suareroot8RT/piM
![The values are given by:
\[ v_{mp} = \sqrt{\frac{2RT}{M}} \quad v_{av} = \sqrt{\frac{8RT}{\pi M}} \quad v_{rms} = \sqrt{\frac{3RT}{M}} \]
where the temperature \( T \) is in Kelvins and \( M \) is the molecular weight in kg/mol. For those with an interest, in mathematical language these are the 0\( ^{th} \), 1\( ^{st} \), and 2\( ^{nd} \) moments of the velocity distribution.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd89f4189-f559-4e28-bddb-4e1c041ee7aa%2Fac9801c9-2363-4a28-8f43-232a350c9721%2F32f8auy.jpeg&w=3840&q=75)
Transcribed Image Text:The values are given by:
\[ v_{mp} = \sqrt{\frac{2RT}{M}} \quad v_{av} = \sqrt{\frac{8RT}{\pi M}} \quad v_{rms} = \sqrt{\frac{3RT}{M}} \]
where the temperature \( T \) is in Kelvins and \( M \) is the molecular weight in kg/mol. For those with an interest, in mathematical language these are the 0\( ^{th} \), 1\( ^{st} \), and 2\( ^{nd} \) moments of the velocity distribution.
![**Determining Molecular Weights of Light and Heavy Particles**
**Which velocity measure is the best match for your averages of the sample speeds you collected?** *(For me, it was \( v_{avv} \)).* Set the expressions equal to your average speeds and solve for the molecular weights of the **Light** and **Heavy** particles in the simulation.
Below is a table of Molecular Weights (MW) for various common gases:
| Gas | MW (g/mol) | Gas | MW (g/mol) | Gas | MW (g/mol) |
|------|------------|-------|------------|------|------------|
| H | 1.008 | Ne | 20.18 | CO₂ | 44.00 |
| He | 4.003 | N₂ | 28.01 | N₂O | 44.01 |
| CH₄ | 16.04 | Air | 28.97 | NO₂ | 46.00 |
| NH₃ | 17.03 | O₂ | 31.99 | SO₂ | 64.05 |
| H₂O | 18.01 | Ar | 39.94 | | |
**Task:**
In this table of common gases, which molecule or atom has a molecular weight closest to your values for the **Light** and **Heavy** particles? Determine this before proceeding. We will report our own results next.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd89f4189-f559-4e28-bddb-4e1c041ee7aa%2Fac9801c9-2363-4a28-8f43-232a350c9721%2F2botxu5.jpeg&w=3840&q=75)
Transcribed Image Text:**Determining Molecular Weights of Light and Heavy Particles**
**Which velocity measure is the best match for your averages of the sample speeds you collected?** *(For me, it was \( v_{avv} \)).* Set the expressions equal to your average speeds and solve for the molecular weights of the **Light** and **Heavy** particles in the simulation.
Below is a table of Molecular Weights (MW) for various common gases:
| Gas | MW (g/mol) | Gas | MW (g/mol) | Gas | MW (g/mol) |
|------|------------|-------|------------|------|------------|
| H | 1.008 | Ne | 20.18 | CO₂ | 44.00 |
| He | 4.003 | N₂ | 28.01 | N₂O | 44.01 |
| CH₄ | 16.04 | Air | 28.97 | NO₂ | 46.00 |
| NH₃ | 17.03 | O₂ | 31.99 | SO₂ | 64.05 |
| H₂O | 18.01 | Ar | 39.94 | | |
**Task:**
In this table of common gases, which molecule or atom has a molecular weight closest to your values for the **Light** and **Heavy** particles? Determine this before proceeding. We will report our own results next.
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