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Alecsey [184]
3 years ago
15

If Dave ran 40,000 yards how many meters did he run? Dimensional Analysis

Chemistry
1 answer:
LUCKY_DIMON [66]3 years ago
5 0
Dave ran 36576 meters
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Regarding the Lyman series of hydrogen, calculate the frequency of the n = 5 line.
zvonat [6]
The Lyman series can be expressed in the formula <span><span>1/λ</span>=<span>RH</span><span>(1−<span>1/<span>n2</span></span>) where </span><span><span>RH</span>=1.0968×<span>107</span><span>m<span>−1</span></span>=<span><span>13.6eV</span><span>hc

</span></span></span></span>Where n is a natural number greater than or equal to 2 (i.e. n = 2,3,4,...). Therefore, the lines seen in the image above are the wavelengths corresponding to n=2 on the right, to n=∞on the left (there are infinitely many spectral lines, but they become very dense as they approach to n=∞<span> (Lyman limit), so only some of the first lines and the last one appear).
 The wavelengths (nm) in the Lyman series are all ultraviolet
:2 3 4 5 6 7 8 9 10 11
 Wavelength (nm) 121.6 102.6 97.3 95 93.8 93.1 92.6 92.3 92.1 91.9 91.18 (Lyman limit)
In your case for the n=5 line you have to replace "n" in the above formula for 5 and you should get a value of 95 x 10^-9 m for the wavelength. then you have to use the other equation that convert wavelength to frequency. </span>
4 0
3 years ago
cuando las particulas estan separadas una de la otra se dice que su estado de agregacion o fisico es?
Mamont248 [21]

Answer:

english:

Solid is the state in which matter maintains a certain volume and shape; liquid is the state in which matter conforms to the shape of its container, but varies only slightly in volume; gas is the state in which matter expands to fill the volume and shape of its container.

español:

Sólido es el estado en el que la materia mantiene cierto volumen y forma; el líquido es el estado en el que la materia se adapta a la forma de su recipiente, pero varía sólo ligeramente en volumen; el gas es el estado en el que la materia se expande para ocupar el volumen y la forma de su recipiente.

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3 years ago
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stealth61 [152]

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inerpreting an author's words and using imagination to picture events

Explanation:

please mark this answer as brainlest

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3 years ago
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Balance the reaction. <br> CaO(s) + SO3(g) → CaSO4(s)
Reika [66]

Answer:

CaO + SO 3 → CaSO. 4

This is an acid-base reaction (neutralization): CaO is a base, SO 3 is an acid.

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3 years ago
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What two substances are always produced by a neutralization reaction?
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