brownian motion

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5 Terms

1
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what is brownian motion?

the random zigzag motion of particles suspended in a fluid

2
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what causes brownian motion?

the movement of larger, heavier particles such as smoke particles in air

3
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how can particles be proved to exist?

  • the suspension of polysterene spheres witj diameter 1nm in a solution

  • under a microscope observe the spheres and you’ll see them moving randomly

  • this shows the existence of smaller particles colliding with the spheres, causing the motion

4
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how do you find the number of moles using the molar mass and total mass?

number of moles= total mass÷molar mass

5
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draw the speed variation graph

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