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Vedmedyk [2.9K]
3 years ago
12

When sodium is excited in a flame, two ultraviolet spectral lines at (wave length symbol)=372.1 nm and (wave length symbol)=376.

4 nm respectively are emitted. Which wavelength represents photons with
Chemistry
2 answers:
elena55 [62]3 years ago
8 0

Answer:

- 372.1 nm -> Higher energy.

- 376.4 nm -> Lower energy.

Explanation:

Hello,

By considering that for a photon the shorter the wavelength the higher the energy, since the two wavelengths are very close, one could distinguish them as follows:

- 372.1 nm -> Higher energy.

- 376.4 nm -> Lower energy.

Furthermore, at lower wavelengths, we find higher frequencies.

- 372.1 nm -> Higher frequency.

- 376.4 nm -> Lower frequency.

Best regards.

uranmaximum [27]3 years ago
5 0
<span>Higher energy = shorter wavelength
Frequency is one cycle over an amount of time (seconds)
So higher frequency = higher energy = shorter wavelength</span>
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The Pressure (P) of a gas on the walls of the container that contains it, the Volume (V) it occupies, the Temperature (T) at which it is located and the amount of substance it contains (number of moles, n) are related from the equation known as Equation of State of Ideal Gases:

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In this case:

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Replacing:

2 atm* V= 0.223 moles*0.0821 \frac{L*atm}{mol*K}* 306 K

Solving:

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