Determine speed of the atoms in the source of light, Chemistry

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Determine speed of the atoms in the source of light

Solve the following problems:

1. (a) Calculate (l/w) and compare the result with 1/ (w).

(b) Show that the number of particles striking a unit area of a wall per unit time is equal to P/√2πmkT .

2. The Doppler broadening of a spectral line increases with the rms speed of the atoms in the source of light. What should give narrower spectral lines: a mercury-198 lamp at 300 K or a krypton-86 lamp at 77 K?

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Chemistry: Determine speed of the atoms in the source of light

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